diff --git a/admin-frontend/src/App.tsx b/admin-frontend/src/App.tsx
index 80db3cb..2b0ecfd 100644
--- a/admin-frontend/src/App.tsx
+++ b/admin-frontend/src/App.tsx
@@ -7,9 +7,18 @@ import SubmissionsPage from "./components/SubmissionsPage";
 import ApiKeysPage from "./components/ApiKeysPage";
 import CategoriesPage from "./components/CategoriesPage";
 import BrandsPage from "./components/BrandsPage";
-import { FolderTree, Inbox, KeyRound, LogOut, Package, Tag } from "lucide-react";
+import StatsPage from "./components/StatsPage";
+import AuditLogPage from "./components/AuditLogPage";
+import { BarChart3, FolderTree, Inbox, KeyRound, LogOut, Package, ScrollText, Tag } from "lucide-react";
 
-type Tab = "products" | "submissions" | "categories" | "brands" | "keys";
+type Tab =
+  | "overview"
+  | "products"
+  | "submissions"
+  | "categories"
+  | "brands"
+  | "audit"
+  | "keys";
 type View = { name: "list" } | { name: "detail"; id: string };
 
 export default function App() {
@@ -74,6 +83,16 @@ export default function App() {
             天工商品档案公共仓 · 后台
           </div>
           <nav className="flex items-center gap-1 text-sm">
+            <button
+              onClick={() => setTab("overview")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "overview"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <BarChart3 className="h-4 w-4" /> 数据概览
+            </button>
             <button
               onClick={() => {
                 setTab("products");
@@ -125,6 +144,16 @@ export default function App() {
             >
               <Tag className="h-4 w-4" /> 品牌管理
             </button>
+            <button
+              onClick={() => setTab("audit")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "audit"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <ScrollText className="h-4 w-4" /> 操作日志
+            </button>
             <button
               onClick={() => setTab("keys")}
               className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
@@ -148,7 +177,11 @@ export default function App() {
         </div>
       </header>
       <main className="flex-1 overflow-auto p-6">
-        {tab === "keys" ? (
+        {tab === "overview" ? (
+          <StatsPage />
+        ) : tab === "audit" ? (
+          <AuditLogPage />
+        ) : tab === "keys" ? (
           <ApiKeysPage />
         ) : tab === "categories" ? (
           <CategoriesPage />
diff --git a/admin-frontend/src/api.ts b/admin-frontend/src/api.ts
index 25235f4..478bbe5 100644
--- a/admin-frontend/src/api.ts
+++ b/admin-frontend/src/api.ts
@@ -171,4 +171,22 @@ export const api = {
     ),
   revokeApiKey: (id: string) =>
     request<{ status: string }>(`/keys/${id}`, { method: "DELETE" }),
+  stats: () => request<import("./types").AdminStats>("/stats"),
+  auditLog: (page: number, size: number) =>
+    request<{
+      items: import("./types").AuditLogRow[];
+      page: number;
+      size: number;
+      total: number;
+    }>(`/audit?page=${page}&size=${size}`),
+  bulkProducts: (body: {
+    ids: string[];
+    action: "status" | "category";
+    status?: string;
+    category_id?: string | null;
+  }) =>
+    request<{ status: string; affected: number }>("/products/bulk", {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
 };
diff --git a/admin-frontend/src/components/AuditLogPage.tsx b/admin-frontend/src/components/AuditLogPage.tsx
new file mode 100644
index 0000000..de30612
--- /dev/null
+++ b/admin-frontend/src/components/AuditLogPage.tsx
@@ -0,0 +1,115 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { AuditLogRow } from "../types";
+import { ScrollText } from "lucide-react";
+
+const ACTION_LABEL: Record<string, string> = {
+  create: "新建",
+  update: "修改",
+  delete: "删除",
+  add_image: "添加图片",
+  delete_image: "删除图片",
+  bulk_status: "批量改状态",
+  bulk_category: "批量改分类",
+};
+
+const ENTITY_LABEL: Record<string, string> = {
+  product: "商品",
+  category: "分类",
+  brand: "品牌",
+};
+
+export default function AuditLogPage() {
+  const [rows, setRows] = useState<AuditLogRow[]>([]);
+  const [total, setTotal] = useState(0);
+  const [page, setPage] = useState(1);
+  const size = 30;
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    setError("");
+    api
+      .auditLog(page, size)
+      .then((r) => {
+        setRows(r.items);
+        setTotal(r.total);
+      })
+      .catch((e) => setError(e instanceof ApiError ? e.message : "加载失败"));
+  }, [page]);
+
+  const pages = Math.max(1, Math.ceil(total / size));
+
+  return (
+    <div className="max-w-5xl">
+      <h2 className="mb-4 flex items-center gap-2 text-lg font-semibold text-gray-800">
+        <ScrollText className="h-5 w-5 text-emerald-600" /> 操作日志
+        <span className="text-sm font-normal text-gray-400">共 {total} 条</span>
+      </h2>
+
+      {error && (
+        <div className="mb-3 rounded bg-red-50 px-4 py-2 text-sm text-red-700">{error}</div>
+      )}
+
+      <div className="overflow-hidden rounded-lg border bg-white">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-left text-xs uppercase text-gray-500">
+            <tr>
+              <th className="px-4 py-2 font-medium">时间</th>
+              <th className="px-4 py-2 font-medium">操作人</th>
+              <th className="px-4 py-2 font-medium">动作</th>
+              <th className="px-4 py-2 font-medium">对象</th>
+              <th className="px-4 py-2 font-medium">字段</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {rows.length === 0 ? (
+              <tr>
+                <td colSpan={5} className="px-4 py-8 text-center text-gray-400">
+                  暂无记录
+                </td>
+              </tr>
+            ) : (
+              rows.map((e) => (
+                <tr key={e.id} className="hover:bg-gray-50">
+                  <td className="whitespace-nowrap px-4 py-2 text-gray-500">
+                    {new Date(e.created_at).toLocaleString()}
+                  </td>
+                  <td className="px-4 py-2 text-gray-700">{e.actor}</td>
+                  <td className="px-4 py-2 text-gray-700">
+                    {ACTION_LABEL[e.action] || e.action}
+                  </td>
+                  <td className="px-4 py-2 text-gray-600">
+                    {ENTITY_LABEL[e.entity] || e.entity}
+                  </td>
+                  <td className="px-4 py-2 text-xs text-gray-400">
+                    {e.fields.length ? e.fields.join(", ") : "—"}
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      <div className="mt-4 flex items-center justify-end gap-2 text-sm text-gray-600">
+        <button
+          disabled={page <= 1}
+          onClick={() => setPage((p) => p - 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          上一页
+        </button>
+        <span>
+          {page} / {pages}
+        </span>
+        <button
+          disabled={page >= pages}
+          onClick={() => setPage((p) => p + 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          下一页
+        </button>
+      </div>
+    </div>
+  );
+}
diff --git a/admin-frontend/src/components/ProductList.tsx b/admin-frontend/src/components/ProductList.tsx
index bfe43b0..1160ff3 100644
--- a/admin-frontend/src/components/ProductList.tsx
+++ b/admin-frontend/src/components/ProductList.tsx
@@ -38,8 +38,13 @@ export default function ProductList({
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
   const [creating, setCreating] = useState(false);
+  const [selected, setSelected] = useState<Set<string>>(new Set());
+  const [categories, setCategories] = useState<Category[]>([]);
+  const [bulkStatus, setBulkStatus] = useState("");
+  const [bulkCategory, setBulkCategory] = useState("");
+  const [bulkBusy, setBulkBusy] = useState(false);
 
-  useEffect(() => {
+  function reload() {
     setLoading(true);
     setError("");
     api
@@ -50,8 +55,72 @@ export default function ProductList({
       })
       .catch((e) => setError(e.message))
       .finally(() => setLoading(false));
+  }
+
+  useEffect(() => {
+    setSelected(new Set());
+    reload();
   }, [q, page, size]);
 
+  useEffect(() => {
+    api.listCategories().then((r) => setCategories(r.items)).catch(() => {});
+  }, []);
+
+  function toggle(id: string) {
+    setSelected((prev) => {
+      const next = new Set(prev);
+      if (next.has(id)) next.delete(id);
+      else next.add(id);
+      return next;
+    });
+  }
+
+  function toggleAll() {
+    setSelected((prev) =>
+      prev.size === rows.length ? new Set() : new Set(rows.map((r) => r.id)),
+    );
+  }
+
+  async function applyBulkStatus() {
+    if (!bulkStatus || selected.size === 0) return;
+    setBulkBusy(true);
+    setError("");
+    try {
+      await api.bulkProducts({
+        ids: [...selected],
+        action: "status",
+        status: bulkStatus,
+      });
+      setSelected(new Set());
+      setBulkStatus("");
+      reload();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "批量操作失败");
+    } finally {
+      setBulkBusy(false);
+    }
+  }
+
+  async function applyBulkCategory() {
+    if (selected.size === 0) return;
+    setBulkBusy(true);
+    setError("");
+    try {
+      await api.bulkProducts({
+        ids: [...selected],
+        action: "category",
+        category_id: bulkCategory || null,
+      });
+      setSelected(new Set());
+      setBulkCategory("");
+      reload();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "批量操作失败");
+    } finally {
+      setBulkBusy(false);
+    }
+  }
+
   const pages = Math.max(1, Math.ceil(total / size));
 
   return (
@@ -106,10 +175,75 @@ export default function ProductList({
         </div>
       )}
 
+      {selected.size > 0 && (
+        <div className="mb-3 flex flex-wrap items-center gap-3 rounded-lg border border-emerald-200 bg-emerald-50 px-4 py-3 text-sm">
+          <span className="font-medium text-emerald-800">
+            已选 {selected.size} 项
+          </span>
+          <div className="flex items-center gap-1.5">
+            <span className="text-gray-500">改状态</span>
+            <select
+              value={bulkStatus}
+              onChange={(e) => setBulkStatus(e.target.value)}
+              className="rounded border border-gray-300 bg-white px-2 py-1"
+            >
+              <option value="">选择</option>
+              <option value="active">在用</option>
+              <option value="deprecated">已停用</option>
+              <option value="merged">已合并</option>
+            </select>
+            <button
+              onClick={applyBulkStatus}
+              disabled={bulkBusy || !bulkStatus}
+              className="rounded bg-emerald-600 px-3 py-1 text-white hover:bg-emerald-700 disabled:opacity-50"
+            >
+              应用
+            </button>
+          </div>
+          <div className="flex items-center gap-1.5">
+            <span className="text-gray-500">改分类</span>
+            <select
+              value={bulkCategory}
+              onChange={(e) => setBulkCategory(e.target.value)}
+              className="rounded border border-gray-300 bg-white px-2 py-1"
+            >
+              <option value="">（未分类）</option>
+              {categories.map((c) => (
+                <option key={c.id} value={c.id}>
+                  {"\u00A0".repeat(c.level * 2)}
+                  {c.name_zh}
+                </option>
+              ))}
+            </select>
+            <button
+              onClick={applyBulkCategory}
+              disabled={bulkBusy}
+              className="rounded bg-emerald-600 px-3 py-1 text-white hover:bg-emerald-700 disabled:opacity-50"
+            >
+              应用
+            </button>
+          </div>
+          <button
+            onClick={() => setSelected(new Set())}
+            className="text-gray-500 hover:text-gray-700"
+          >
+            取消选择
+          </button>
+        </div>
+      )}
+
       <div className="overflow-hidden rounded-lg border border-gray-200 bg-white">
         <table className="w-full text-sm">
           <thead className="bg-gray-50 text-left text-xs uppercase text-gray-500">
             <tr>
+              <th className="w-10 px-4 py-3">
+                <input
+                  type="checkbox"
+                  checked={rows.length > 0 && selected.size === rows.length}
+                  onChange={toggleAll}
+                  aria-label="全选"
+                />
+              </th>
               <th className="px-4 py-3">名称</th>
               <th className="px-4 py-3">品牌</th>
               <th className="px-4 py-3">条码</th>
@@ -122,13 +256,13 @@ export default function ProductList({
           <tbody className="divide-y divide-gray-100">
             {loading ? (
               <tr>
-                <td colSpan={7} className="px-4 py-8 text-center text-gray-400">
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
                   加载中…
                 </td>
               </tr>
             ) : rows.length === 0 ? (
               <tr>
-                <td colSpan={7} className="px-4 py-8 text-center text-gray-400">
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
                   暂无数据
                 </td>
               </tr>
@@ -137,8 +271,21 @@ export default function ProductList({
                 <tr
                   key={r.id}
                   onClick={() => onOpen(r.id)}
-                  className="cursor-pointer hover:bg-emerald-50/50"
+                  className={`cursor-pointer hover:bg-emerald-50/50 ${
+                    selected.has(r.id) ? "bg-emerald-50/60" : ""
+                  }`}
                 >
+                  <td
+                    className="px-4 py-3"
+                    onClick={(e) => e.stopPropagation()}
+                  >
+                    <input
+                      type="checkbox"
+                      checked={selected.has(r.id)}
+                      onChange={() => toggle(r.id)}
+                      aria-label="选择"
+                    />
+                  </td>
                   <td className="px-4 py-3 font-medium text-gray-800">{r.name}</td>
                   <td className="px-4 py-3 text-gray-600">{r.brand || "—"}</td>
                   <td className="px-4 py-3 font-mono text-xs text-gray-500">
diff --git a/admin-frontend/src/components/StatsPage.tsx b/admin-frontend/src/components/StatsPage.tsx
new file mode 100644
index 0000000..491de41
--- /dev/null
+++ b/admin-frontend/src/components/StatsPage.tsx
@@ -0,0 +1,125 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { AdminStats } from "../types";
+import { BarChart3, Package, CheckCircle2, Tag, FolderTree, Inbox } from "lucide-react";
+
+const STATUS_LABEL: Record<string, string> = {
+  active: "在用",
+  merged: "已合并",
+  deprecated: "已停用",
+};
+
+function Card({
+  icon,
+  label,
+  value,
+  hint,
+}: {
+  icon: React.ReactNode;
+  label: string;
+  value: string | number;
+  hint?: string;
+}) {
+  return (
+    <div className="rounded-lg border bg-white p-5">
+      <div className="flex items-center gap-2 text-sm text-gray-500">
+        {icon}
+        {label}
+      </div>
+      <div className="mt-2 text-2xl font-semibold text-gray-800">{value}</div>
+      {hint && <div className="mt-1 text-xs text-gray-400">{hint}</div>}
+    </div>
+  );
+}
+
+export default function StatsPage() {
+  const [stats, setStats] = useState<AdminStats | null>(null);
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    api
+      .stats()
+      .then(setStats)
+      .catch((e) => setError(e instanceof ApiError ? e.message : "加载失败"));
+  }, []);
+
+  return (
+    <div className="max-w-5xl">
+      <h2 className="mb-4 flex items-center gap-2 text-lg font-semibold text-gray-800">
+        <BarChart3 className="h-5 w-5 text-emerald-600" /> 数据概览
+      </h2>
+
+      {error && (
+        <div className="mb-3 rounded bg-red-50 px-4 py-2 text-sm text-red-700">{error}</div>
+      )}
+
+      {!stats ? (
+        <div className="text-sm text-gray-400">加载中…</div>
+      ) : (
+        <>
+          <div className="grid grid-cols-2 gap-4 md:grid-cols-3">
+            <Card
+              icon={<Package className="h-4 w-4" />}
+              label="商品总数"
+              value={stats.products.toLocaleString()}
+            />
+            <Card
+              icon={<CheckCircle2 className="h-4 w-4 text-emerald-600" />}
+              label="合格档案"
+              value={stats.qualified.toLocaleString()}
+              hint={`质量分 ≥ ${stats.min_score} 且在用`}
+            />
+            <Card
+              icon={<BarChart3 className="h-4 w-4" />}
+              label="平均质量分"
+              value={Math.round(stats.avg_quality * 100)}
+              hint="满分 100"
+            />
+            <Card
+              icon={<Tag className="h-4 w-4" />}
+              label="品牌数"
+              value={stats.brands.toLocaleString()}
+            />
+            <Card
+              icon={<FolderTree className="h-4 w-4" />}
+              label="分类数"
+              value={stats.categories.toLocaleString()}
+            />
+            <Card
+              icon={<Inbox className="h-4 w-4" />}
+              label="待审核投稿"
+              value={stats.pending_submissions.toLocaleString()}
+            />
+          </div>
+
+          <div className="mt-6 rounded-lg border bg-white p-5">
+            <h3 className="mb-3 text-sm font-medium text-gray-700">按状态分布</h3>
+            <div className="space-y-2">
+              {Object.keys(stats.by_status).length === 0 ? (
+                <div className="text-sm text-gray-400">暂无数据</div>
+              ) : (
+                Object.entries(stats.by_status).map(([st, n]) => {
+                  const pct = stats.products > 0 ? (n / stats.products) * 100 : 0;
+                  return (
+                    <div key={st} className="flex items-center gap-3 text-sm">
+                      <span className="w-16 text-gray-600">
+                        {STATUS_LABEL[st] || st}
+                      </span>
+                      <div className="h-3 flex-1 overflow-hidden rounded bg-gray-100">
+                        <div
+                          className="h-full bg-emerald-500"
+                          style={{ width: `${pct}%` }}
+                        />
+                      </div>
+                      <span className="w-12 text-right text-gray-500">{n}</span>
+                    </div>
+                  );
+                })
+              )}
+            </div>
+          </div>
+        </>
+      )}
+    </div>
+  );
+}
diff --git a/admin-frontend/src/types.ts b/admin-frontend/src/types.ts
index c74ef1a..1b6a331 100644
--- a/admin-frontend/src/types.ts
+++ b/admin-frontend/src/types.ts
@@ -96,6 +96,27 @@ export interface AuditEntry {
   created_at: string;
 }
 
+export interface AuditLogRow {
+  id: string;
+  actor: string;
+  action: string;
+  entity: string;
+  entity_id: string | null;
+  fields: string[];
+  created_at: string;
+}
+
+export interface AdminStats {
+  products: number;
+  qualified: number;
+  min_score: number;
+  by_status: Record<string, number>;
+  brands: number;
+  categories: number;
+  pending_submissions: number;
+  avg_quality: number;
+}
+
 export interface SubmissionRow {
   id: string;
   gtin: string | null;
diff --git a/api/internal/adminhandler/handler.go b/api/internal/adminhandler/handler.go
index df091a0..76d134a 100644
--- a/api/internal/adminhandler/handler.go
+++ b/api/internal/adminhandler/handler.go
@@ -64,8 +64,11 @@ func (h *Handler) Router() http.Handler {
 		r.Group(func(r chi.Router) {
 			r.Use(h.authn.Middleware)
 			r.Get("/api/me", h.Me)
+			r.Get("/api/stats", h.Stats)
+			r.Get("/api/audit", h.ListAllAudit)
 			r.Get("/api/products", h.ListProducts)
 			r.Post("/api/products", h.CreateProduct)
+			r.Post("/api/products/bulk", h.BulkProducts)
 			r.Get("/api/products/{id}", h.GetProduct)
 			r.Put("/api/products/{id}", h.UpdateProduct)
 			r.Get("/api/products/{id}/audit", h.ListAudit)
@@ -203,6 +206,76 @@ func (h *Handler) CreateProduct(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusCreated, d)
 }
 
+// Stats returns the dashboard overview counters.
+func (h *Handler) Stats(w http.ResponseWriter, r *http.Request) {
+	st, err := h.store.Stats(r.Context())
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, st)
+}
+
+// ListAllAudit returns a page of the global operations audit log.
+func (h *Handler) ListAllAudit(w http.ResponseWriter, r *http.Request) {
+	page, size := pageParams(r)
+	items, total, err := h.store.ListAllAudit(r.Context(), size, (page-1)*size)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{
+		"items": items, "page": page, "size": size, "total": total,
+	})
+}
+
+type bulkInput struct {
+	IDs        []string `json:"ids"`
+	Action     string   `json:"action"`
+	Status     string   `json:"status"`
+	CategoryID *string  `json:"category_id"`
+}
+
+// BulkProducts applies a status or category change to many products at once.
+func (h *Handler) BulkProducts(w http.ResponseWriter, r *http.Request) {
+	var in bulkInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if len(in.IDs) == 0 {
+		writeError(w, http.StatusBadRequest, "bad_request", "未选择任何商品")
+		return
+	}
+	actor := auth.UserFrom(r.Context())
+	var (
+		affected int
+		err      error
+	)
+	switch in.Action {
+	case "status":
+		affected, err = h.store.BulkSetStatus(r.Context(), actor, in.IDs, in.Status)
+	case "category":
+		affected, err = h.store.BulkSetCategory(r.Context(), actor, in.IDs, in.CategoryID)
+	default:
+		writeError(w, http.StatusBadRequest, "bad_request", "未知的批量操作")
+		return
+	}
+	switch {
+	case errors.Is(err, adminstore.ErrInvalidStatus):
+		writeError(w, http.StatusBadRequest, "invalid_status", "无效的状态值")
+		return
+	case errors.Is(err, adminstore.ErrInvalidParent):
+		writeError(w, http.StatusBadRequest, "invalid_parent", "目标分类无效")
+		return
+	case errors.Is(err, adminstore.ErrNoTargets):
+		writeError(w, http.StatusBadRequest, "bad_request", "未选择任何商品")
+		return
+	}
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"status": "ok", "affected": affected})
+}
+
 // UpdateProduct applies an edit.
 func (h *Handler) UpdateProduct(w http.ResponseWriter, r *http.Request) {
 	var in adminstore.ProductInput
diff --git a/api/internal/adminstore/bulk.go b/api/internal/adminstore/bulk.go
new file mode 100644
index 0000000..3c4f8d6
--- /dev/null
+++ b/api/internal/adminstore/bulk.go
@@ -0,0 +1,80 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+)
+
+// Bulk-operation errors.
+var (
+	// ErrNoTargets is returned when a bulk request selects no products.
+	ErrNoTargets = errors.New("no products selected")
+	// ErrInvalidStatus is returned for an unknown product status value.
+	ErrInvalidStatus = errors.New("invalid status")
+)
+
+var validStatus = map[string]bool{"active": true, "merged": true, "deprecated": true}
+
+// BulkSetStatus updates the status of every selected product in one statement.
+func (s *Store) BulkSetStatus(ctx context.Context, actor string, ids []string, status string) (int, error) {
+	if len(ids) == 0 {
+		return 0, ErrNoTargets
+	}
+	if !validStatus[status] {
+		return 0, ErrInvalidStatus
+	}
+	ct, err := s.pool.Exec(ctx,
+		"UPDATE product SET status = $1 WHERE id = ANY($2)", status, ids)
+	if err != nil {
+		return 0, err
+	}
+	n := int(ct.RowsAffected())
+	_ = s.writeAudit(ctx, actor, "bulk_status", "product", nil,
+		[]string{"status"}, map[string]any{"ids": ids}, map[string]any{"status": status})
+	return n, nil
+}
+
+// BulkSetCategory reassigns the category of every selected product, syncing the
+// GPC brick code and recomputing quality for each one.
+func (s *Store) BulkSetCategory(ctx context.Context, actor string, ids []string, categoryID *string) (int, error) {
+	if len(ids) == 0 {
+		return 0, ErrNoTargets
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback(ctx)
+
+	var gpc *string
+	if categoryID != nil && *categoryID != "" {
+		if err := tx.QueryRow(ctx, "SELECT gpc_brick_code FROM category WHERE id = $1", *categoryID).Scan(&gpc); err != nil {
+			return 0, ErrInvalidParent
+		}
+	} else {
+		categoryID = nil
+	}
+
+	ct, err := tx.Exec(ctx,
+		"UPDATE product SET category_id = $1, gpc_brick_code = $2 WHERE id = ANY($3)",
+		categoryID, gpc, ids)
+	if err != nil {
+		return 0, err
+	}
+	for _, id := range ids {
+		if _, err := s.recomputeQualityTx(ctx, tx, id); err != nil {
+			return 0, err
+		}
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return 0, err
+	}
+	n := int(ct.RowsAffected())
+	cat := ""
+	if categoryID != nil {
+		cat = *categoryID
+	}
+	_ = s.writeAudit(ctx, actor, "bulk_category", "product", nil,
+		[]string{"category"}, map[string]any{"ids": ids}, map[string]any{"category_id": cat})
+	return n, nil
+}
diff --git a/api/internal/adminstore/stats.go b/api/internal/adminstore/stats.go
new file mode 100644
index 0000000..3f80931
--- /dev/null
+++ b/api/internal/adminstore/stats.go
@@ -0,0 +1,61 @@
+package adminstore
+
+import "context"
+
+// QualifiedMinScore is the quality_score threshold at or above which a product
+// counts as "qualified" (合格) in admin and public stats.
+const QualifiedMinScore = 0.6
+
+// AdminStats summarizes the catalog for the admin overview dashboard.
+type AdminStats struct {
+	Products   int            `json:"products"`
+	Qualified  int            `json:"qualified"`
+	MinScore   float64        `json:"min_score"`
+	ByStatus   map[string]int `json:"by_status"`
+	Brands     int            `json:"brands"`
+	Categories int            `json:"categories"`
+	Pending    int            `json:"pending_submissions"`
+	AvgQuality float64        `json:"avg_quality"`
+}
+
+// Stats gathers the dashboard counters in a handful of aggregate queries.
+func (s *Store) Stats(ctx context.Context) (*AdminStats, error) {
+	out := &AdminStats{MinScore: QualifiedMinScore, ByStatus: map[string]int{}}
+
+	if err := s.pool.QueryRow(ctx, `
+SELECT count(*),
+       count(*) FILTER (WHERE quality_score >= $1 AND status = 'active'),
+       COALESCE(avg(quality_score), 0)
+FROM product`, QualifiedMinScore).Scan(&out.Products, &out.Qualified, &out.AvgQuality); err != nil {
+		return nil, err
+	}
+
+	rows, err := s.pool.Query(ctx, "SELECT status, count(*) FROM product GROUP BY status")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var st string
+		var n int
+		if err := rows.Scan(&st, &n); err != nil {
+			return nil, err
+		}
+		out.ByStatus[st] = n
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM brand").Scan(&out.Brands); err != nil {
+		return nil, err
+	}
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM category").Scan(&out.Categories); err != nil {
+		return nil, err
+	}
+	if err := s.pool.QueryRow(ctx,
+		"SELECT count(*) FROM submission WHERE status = 'pending'").Scan(&out.Pending); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
diff --git a/api/internal/adminstore/stats_bulk_test.go b/api/internal/adminstore/stats_bulk_test.go
new file mode 100644
index 0000000..b5a0890
--- /dev/null
+++ b/api/internal/adminstore/stats_bulk_test.go
@@ -0,0 +1,71 @@
+package adminstore
+
+import (
+	"context"
+	"testing"
+)
+
+func TestStatsAndBulk(t *testing.T) {
+	s := newTestStore(t)
+	ctx := context.Background()
+
+	base, err := s.Stats(ctx)
+	if err != nil {
+		t.Fatalf("stats: %v", err)
+	}
+
+	var p1, p2 string
+	if err := s.pool.QueryRow(ctx,
+		"INSERT INTO product (name, status) VALUES ($1,'active') RETURNING id",
+		"批量测试1 "+randomHex(4)).Scan(&p1); err != nil {
+		t.Fatalf("insert p1: %v", err)
+	}
+	if err := s.pool.QueryRow(ctx,
+		"INSERT INTO product (name, status) VALUES ($1,'active') RETURNING id",
+		"批量测试2 "+randomHex(4)).Scan(&p2); err != nil {
+		t.Fatalf("insert p2: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM product WHERE id = ANY($1)", []string{p1, p2}) })
+
+	after, err := s.Stats(ctx)
+	if err != nil {
+		t.Fatalf("stats after: %v", err)
+	}
+	if after.Products != base.Products+2 {
+		t.Fatalf("product count: got %d want %d", after.Products, base.Products+2)
+	}
+
+	// Bulk set status to deprecated.
+	n, err := s.BulkSetStatus(ctx, "tester", []string{p1, p2}, "deprecated")
+	if err != nil || n != 2 {
+		t.Fatalf("bulk status: n=%d err=%v", n, err)
+	}
+	var deprecated int
+	if err := s.pool.QueryRow(ctx,
+		"SELECT count(*) FROM product WHERE id = ANY($1) AND status='deprecated'",
+		[]string{p1, p2}).Scan(&deprecated); err != nil {
+		t.Fatalf("verify: %v", err)
+	}
+	if deprecated != 2 {
+		t.Fatalf("expected 2 deprecated, got %d", deprecated)
+	}
+
+	// Invalid status rejected.
+	if _, err := s.BulkSetStatus(ctx, "tester", []string{p1}, "nope"); err != ErrInvalidStatus {
+		t.Fatalf("expected ErrInvalidStatus, got %v", err)
+	}
+
+	// Empty selection rejected.
+	if _, err := s.BulkSetStatus(ctx, "tester", nil, "active"); err != ErrNoTargets {
+		t.Fatalf("expected ErrNoTargets, got %v", err)
+	}
+
+	// Global audit log should contain the bulk_status entry.
+	rows, total, err := s.ListAllAudit(ctx, 10, 0)
+	if err != nil {
+		t.Fatalf("audit: %v", err)
+	}
+	if total == 0 || len(rows) == 0 {
+		t.Fatalf("expected audit rows, got total=%d", total)
+	}
+}
diff --git a/api/internal/adminstore/write.go b/api/internal/adminstore/write.go
index 9a6a4dd..63b3a53 100644
--- a/api/internal/adminstore/write.go
+++ b/api/internal/adminstore/write.go
@@ -481,6 +481,44 @@ type AuditEntry struct {
 	CreatedAt string   `json:"created_at"`
 }
 
+// AuditLogRow is one global audit-log row for the operations log view.
+type AuditLogRow struct {
+	ID        string   `json:"id"`
+	Actor     string   `json:"actor"`
+	Action    string   `json:"action"`
+	Entity    string   `json:"entity"`
+	EntityID  *string  `json:"entity_id"`
+	Fields    []string `json:"fields"`
+	CreatedAt string   `json:"created_at"`
+}
+
+// ListAllAudit returns a page of the global audit log, newest first, along with
+// the total row count.
+func (s *Store) ListAllAudit(ctx context.Context, limit, offset int) ([]AuditLogRow, int, error) {
+	var total int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM audit_log").Scan(&total); err != nil {
+		return nil, 0, err
+	}
+	rows, err := s.pool.Query(ctx, `
+SELECT id, actor, action, entity, entity_id::text, fields, created_at::text
+FROM audit_log
+ORDER BY created_at DESC
+LIMIT $1 OFFSET $2`, limit, offset)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+	out := []AuditLogRow{}
+	for rows.Next() {
+		var e AuditLogRow
+		if err := rows.Scan(&e.ID, &e.Actor, &e.Action, &e.Entity, &e.EntityID, &e.Fields, &e.CreatedAt); err != nil {
+			return nil, 0, err
+		}
+		out = append(out, e)
+	}
+	return out, total, rows.Err()
+}
+
 // ListAudit returns audit history for one product, newest first.
 func (s *Store) ListAudit(ctx context.Context, productID string, limit int) ([]AuditEntry, error) {
 	rows, err := s.pool.Query(ctx, `
diff --git a/api/internal/handler/handler.go b/api/internal/handler/handler.go
index bea9ea6..c15753e 100644
--- a/api/internal/handler/handler.go
+++ b/api/internal/handler/handler.go
@@ -26,6 +26,10 @@ var openAPISpec []byte
 // APIVersion is the current public API version prefix.
 const APIVersion = "v1"
 
+// QualifiedMinScore is the quality_score threshold at or above which a product
+// record is considered "qualified" (合格) for public stats.
+const QualifiedMinScore = 0.6
+
 const (
 	defaultPageSize = 20
 	maxPageSize     = 100
@@ -85,6 +89,7 @@ func (h *Handler) Router() http.Handler {
 			r.Get("/brands", h.ListBrands)
 			r.Get("/categories", h.ListCategories)
 			r.Get("/sources/{id}", h.SourceByID)
+			r.Get("/stats", h.Stats)
 		})
 	})
 
@@ -122,6 +127,15 @@ func (h *Handler) Healthz(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
 }
 
+// Stats returns catalog totals and the count of qualified records.
+func (h *Handler) Stats(w http.ResponseWriter, r *http.Request) {
+	st, err := h.store.Stats(r.Context(), QualifiedMinScore)
+	if h.handleErr(w, r, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, st)
+}
+
 // OpenAPI serves the embedded OpenAPI 3 specification for the public API.
 func (h *Handler) OpenAPI(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=utf-8")
diff --git a/api/internal/store/store.go b/api/internal/store/store.go
index 6938fe1..5c537eb 100644
--- a/api/internal/store/store.go
+++ b/api/internal/store/store.go
@@ -29,6 +29,24 @@ func (s *Store) Ping(ctx context.Context) error {
 	return s.pool.Ping(ctx)
 }
 
+// PublicStats summarizes the public catalog for the homepage.
+type PublicStats struct {
+	Total     int     `json:"total"`
+	Qualified int     `json:"qualified"`
+	MinScore  float64 `json:"min_score"`
+}
+
+// Stats returns active-product totals and the number of qualified records whose
+// quality_score meets minScore.
+func (s *Store) Stats(ctx context.Context, minScore float64) (PublicStats, error) {
+	st := PublicStats{MinScore: minScore}
+	err := s.pool.QueryRow(ctx, `
+SELECT count(*) FILTER (WHERE status = 'active'),
+       count(*) FILTER (WHERE status = 'active' AND quality_score >= $1)
+FROM product`, minScore).Scan(&st.Total, &st.Qualified)
+	return st, err
+}
+
 // Barcode is one GS1 trade item number attached to a product.
 type Barcode struct {
 	GTIN      string  `json:"gtin"`
diff --git a/public-frontend/src/api.ts b/public-frontend/src/api.ts
index 0f34a13..a1fec27 100644
--- a/public-frontend/src/api.ts
+++ b/public-frontend/src/api.ts
@@ -30,7 +30,14 @@ export interface SearchFilters {
   country?: string;
 }
 
+export interface Stats {
+  total: number;
+  qualified: number;
+  min_score: number;
+}
+
 export const api = {
+  stats: () => req<Stats>(`/api/v1/stats`),
   search: (q: string, page = 1, size = 20, filters: SearchFilters = {}) => {
     const params = new URLSearchParams({
       q,
diff --git a/public-frontend/src/components/Home.tsx b/public-frontend/src/components/Home.tsx
index 9ef3eea..10bd8ec 100644
--- a/public-frontend/src/components/Home.tsx
+++ b/public-frontend/src/components/Home.tsx
@@ -1,4 +1,4 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import { Search, PlusCircle, Code2 } from "lucide-react";
 import { api } from "../api";
 import type { ProductSummary } from "../types";
@@ -20,6 +20,14 @@ export default function Home({
   const [searched, setSearched] = useState(false);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
+  const [qualified, setQualified] = useState<number | null>(null);
+
+  useEffect(() => {
+    api
+      .stats()
+      .then((s) => setQualified(s.qualified))
+      .catch(() => setQualified(null));
+  }, []);
 
   async function run(e?: React.FormEvent) {
     e?.preventDefault();
@@ -43,10 +51,19 @@ export default function Home({
   return (
     <div>
       <div className="text-center py-10">
-        <h1 className="text-3xl font-bold text-gray-800">天工商品档案公共仓</h1>
+        <h1 className="text-3xl font-bold text-gray-800">天工</h1>
         <p className="mt-2 text-gray-500">
           输入商品名称或条码，检索客观、可溯源的商品资料。人人可查，人人可贡献。
         </p>
+        {qualified != null && (
+          <p className="mt-3 text-sm text-gray-500">
+            目前已收录
+            <span className="mx-1 font-semibold text-emerald-600">
+              {qualified.toLocaleString()}
+            </span>
+            条合格商品档案
+          </p>
+        )}
         <form onSubmit={run} className="mt-6 max-w-2xl mx-auto flex gap-2">
           <div className="flex-1 flex items-center gap-2 bg-white border rounded-lg px-3 shadow-sm focus-within:ring-2 focus-within:ring-emerald-400">
             <Search className="w-5 h-5 text-gray-400" />