diff --git a/ai_knowledge_base_v2/apps/admin-web/index.html b/ai_knowledge_base_v2/apps/admin-web/index.html
index 36ccf30..a2db536 100644
--- a/ai_knowledge_base_v2/apps/admin-web/index.html
+++ b/ai_knowledge_base_v2/apps/admin-web/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>大本营答疑助手后台</title>
+    <title>大本营千问千答</title>
   </head>
   <body>
     <div id="app"></div>
diff --git a/ai_knowledge_base_v2/apps/admin-web/src/App.vue b/ai_knowledge_base_v2/apps/admin-web/src/App.vue
index c4935ba..310309a 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/App.vue
+++ b/ai_knowledge_base_v2/apps/admin-web/src/App.vue
@@ -23,6 +23,7 @@ const loading = ref(false);
 
 const loginForm = reactive({ username: "admin", password: "admin123456" });
 const stats = ref<DashboardStats | null>(null);
+const dashboardDateRange = ref<[string, string] | null>(null);
 const users = ref<AdminUser[]>([]);
 const userKeyword = ref("");
 const knowledge = ref<KnowledgeItem[]>([]);
@@ -502,10 +503,15 @@ async function switchMenu(menu: string) {
   await loadCurrentMenu();
 }
 
+async function loadDashboard() {
+  const [start, end] = dashboardDateRange.value ?? ["", ""];
+  stats.value = await api.dashboard(start, end);
+}
+
 async function loadCurrentMenu() {
   loading.value = true;
   try {
-    if (activeMenu.value === "dashboard") stats.value = await api.dashboard();
+    if (activeMenu.value === "dashboard") await loadDashboard();
     if (activeMenu.value === "users") users.value = await api.users(userKeyword.value);
     if (activeMenu.value === "knowledge") knowledge.value = await api.knowledge();
     if (activeMenu.value === "prompt") {
@@ -1036,7 +1042,7 @@ function buildChatQuery() {
       <div class="login-hero-main">
         <div class="login-brand">
           <span>答</span>
-          <strong>大本营答疑助手后台</strong>
+          <strong>大本营千问千答</strong>
         </div>
         <h1>把大本营答疑、知识库和学员运营放在同一个控制台里。</h1>
         <p>统一维护学员名单、开放知识库、模型接入、Agent 调试、问答记录和系统运行参数，方便排查与交接。</p>
@@ -1072,8 +1078,8 @@ function buildChatQuery() {
 
   <main v-else class="admin-shell">
     <aside class="sidebar">
-      <div class="sidebar-title">大本营答疑</div>
-      <button :class="{ active: activeMenu === 'dashboard' }" @click="switchMenu('dashboard')">Dashboard</button>
+      <div class="sidebar-title">大本营千问千答</div>
+      <button :class="{ active: activeMenu === 'dashboard' }" @click="switchMenu('dashboard')">数据看板</button>
       <button :class="{ active: activeMenu === 'users' }" @click="switchMenu('users')">用户管理</button>
       <button :class="{ active: activeMenu === 'knowledge' }" @click="switchMenu('knowledge')">知识库管理</button>
       <button :class="{ active: activeMenu === 'prompt' }" @click="switchMenu('prompt')">Agent 管理</button>
@@ -1093,9 +1099,17 @@ function buildChatQuery() {
 
       <section v-loading="loading" class="content">
         <template v-if="activeMenu === 'dashboard'">
-          <div class="page-head">
-            <h2>Dashboard</h2>
-            <p>核心业务数据概览。</p>
+          <div class="page-head inline">
+            <div><h2>数据看板</h2><p>核心业务数据概览。</p></div>
+            <el-date-picker
+              v-model="dashboardDateRange"
+              type="daterange"
+              range-separator="至"
+              start-placeholder="开始日期"
+              end-placeholder="结束日期"
+              value-format="YYYY-MM-DD"
+              @change="loadDashboard"
+            />
           </div>
           <div class="stats-grid">
             <div class="stat"><span>用户数</span><strong>{{ stats?.userCount ?? 0 }}</strong></div>
@@ -1103,6 +1117,9 @@ function buildChatQuery() {
             <div class="stat"><span>消息数</span><strong>{{ stats?.messageCount ?? 0 }}</strong></div>
             <div class="stat"><span>AI 请求</span><strong>{{ stats?.aiRequestCount ?? 0 }}</strong></div>
             <div class="stat"><span>知识库</span><strong>{{ stats?.knowledgeCount ?? 0 }}</strong></div>
+            <div class="stat"><span>输入 Token</span><strong>{{ stats?.inputToken ?? 0 }}</strong></div>
+            <div class="stat"><span>输出 Token</span><strong>{{ stats?.outputToken ?? 0 }}</strong></div>
+            <div class="stat"><span>总 Token</span><strong>{{ stats?.totalToken ?? 0 }}</strong></div>
           </div>
         </template>
 
diff --git a/ai_knowledge_base_v2/apps/admin-web/src/services/api.ts b/ai_knowledge_base_v2/apps/admin-web/src/services/api.ts
index d6fb76f..bafdff5 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/services/api.ts
+++ b/ai_knowledge_base_v2/apps/admin-web/src/services/api.ts
@@ -85,7 +85,13 @@ export const api = {
       body: JSON.stringify({ username, password }),
     }),
   profile: () => request<AdminProfile>("/admin/profile"),
-  dashboard: () => request<DashboardStats>("/admin/dashboard"),
+  dashboard: (start?: string, end?: string) => {
+    const params = new URLSearchParams();
+    if (start) params.set("start", start);
+    if (end) params.set("end", end);
+    const qs = params.toString();
+    return request<DashboardStats>(`/admin/dashboard${qs ? "?" + qs : ""}`);
+  },
   users: (keyword = "") => request<AdminUser[]>(`/admin/user/list?keyword=${encodeURIComponent(keyword)}`),
   createUser: (payload: Record<string, unknown>) =>
     request<AdminUser>("/admin/user", { method: "POST", body: JSON.stringify(payload) }),
diff --git a/ai_knowledge_base_v2/apps/admin-web/src/styles.css b/ai_knowledge_base_v2/apps/admin-web/src/styles.css
index ba472eb..45a9717 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/styles.css
+++ b/ai_knowledge_base_v2/apps/admin-web/src/styles.css
@@ -264,7 +264,7 @@ textarea {
 
 .stats-grid {
   display: grid;
-  grid-template-columns: repeat(5, minmax(0, 1fr));
+  grid-template-columns: repeat(4, minmax(0, 1fr));
   gap: 14px;
 }
 
@@ -1002,7 +1002,10 @@ textarea {
     width: 100%;
   }
 
-  .stats-grid,
+  .stats-grid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
   .chat-summary {
     grid-template-columns: 1fr;
   }
diff --git a/ai_knowledge_base_v2/apps/admin-web/src/types/api.ts b/ai_knowledge_base_v2/apps/admin-web/src/types/api.ts
index 6e07058..67ec956 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/types/api.ts
+++ b/ai_knowledge_base_v2/apps/admin-web/src/types/api.ts
@@ -17,6 +17,9 @@ export interface DashboardStats {
   messageCount: number;
   aiRequestCount: number;
   knowledgeCount: number;
+  inputToken: number;
+  outputToken: number;
+  totalToken: number;
 }
 
 export interface AdminUser {
diff --git a/ai_knowledge_base_v2/apps/backend/app/api/admin_dashboard.py b/ai_knowledge_base_v2/apps/backend/app/api/admin_dashboard.py
index cdba2b1..59b13a3 100644
--- a/ai_knowledge_base_v2/apps/backend/app/api/admin_dashboard.py
+++ b/ai_knowledge_base_v2/apps/backend/app/api/admin_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from fastapi import APIRouter, Depends
+from datetime import datetime
+
+from fastapi import APIRouter, Depends, Query
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
@@ -15,8 +17,16 @@ router = APIRouter()
 
 @router.get("/dashboard")
 def dashboard(
+    start: str = Query(default="", description="开始日期 YYYY-MM-DD"),
+    end: str = Query(default="", description="结束日期 YYYY-MM-DD"),
     db: Session = Depends(get_db),
     current_admin: Admin = Depends(get_current_admin),
 ) -> dict:
-    stats = AdminDashboardService.stats(db)
+    start_dt = datetime.strptime(start, "%Y-%m-%d") if start else None
+    if end:
+        end_dt = datetime.strptime(end, "%Y-%m-%d")
+        end_dt = end_dt.replace(hour=23, minute=59, second=59)
+    else:
+        end_dt = None
+    stats = AdminDashboardService.stats(db, start_dt, end_dt)
     return api_success(DashboardStats.model_validate(stats).model_dump())
diff --git a/ai_knowledge_base_v2/apps/backend/app/schemas/admin.py b/ai_knowledge_base_v2/apps/backend/app/schemas/admin.py
index 79f43e4..98c33db 100644
--- a/ai_knowledge_base_v2/apps/backend/app/schemas/admin.py
+++ b/ai_knowledge_base_v2/apps/backend/app/schemas/admin.py
@@ -31,6 +31,9 @@ class DashboardStats(BaseModel):
     messageCount: int
     aiRequestCount: int
     knowledgeCount: int
+    inputToken: int
+    outputToken: int
+    totalToken: int
 
 
 class AdminUserUpdateRequest(BaseModel):
diff --git a/ai_knowledge_base_v2/apps/backend/app/services/admin_service.py b/ai_knowledge_base_v2/apps/backend/app/services/admin_service.py
index 754b516..52b422c 100644
--- a/ai_knowledge_base_v2/apps/backend/app/services/admin_service.py
+++ b/ai_knowledge_base_v2/apps/backend/app/services/admin_service.py
@@ -60,13 +60,35 @@ class AdminAuthService:
 
 class AdminDashboardService:
     @staticmethod
-    def stats(db: Session) -> dict:
+    def stats(db: Session, start: datetime | None = None, end: datetime | None = None) -> dict:
+        from sqlalchemy import and_
+
+        # 基础表查询条件（时间范围）
+        user_filter = [User.is_deleted == 0]
+        session_filter = [ChatSession.is_deleted == 0]
+        msg_filter = []
+        ai_filter = []
+
+        if start:
+            user_filter.append(User.created_at >= start)
+            session_filter.append(ChatSession.created_at >= start)
+            msg_filter.append(ChatMessage.created_at >= start)
+            ai_filter.append(AiRequestLog.created_at >= start)
+        if end:
+            user_filter.append(User.created_at <= end)
+            session_filter.append(ChatSession.created_at <= end)
+            msg_filter.append(ChatMessage.created_at <= end)
+            ai_filter.append(AiRequestLog.created_at <= end)
+
         return {
-            "userCount": db.scalar(select(func.count(User.id)).where(User.is_deleted == 0)) or 0,
-            "sessionCount": db.scalar(select(func.count(ChatSession.id)).where(ChatSession.is_deleted == 0)) or 0,
-            "messageCount": db.scalar(select(func.count(ChatMessage.id))) or 0,
-            "aiRequestCount": db.scalar(select(func.count(AiRequestLog.id))) or 0,
+            "userCount": db.scalar(select(func.count(User.id)).where(and_(*user_filter))) or 0,
+            "sessionCount": db.scalar(select(func.count(ChatSession.id)).where(and_(*session_filter))) or 0,
+            "messageCount": db.scalar(select(func.count(ChatMessage.id)).where(and_(*msg_filter))) or 0,
+            "aiRequestCount": db.scalar(select(func.count(AiRequestLog.id)).where(and_(*ai_filter))) or 0,
             "knowledgeCount": db.scalar(select(func.count(Knowledge.id))) or 0,
+            "inputToken": db.scalar(select(func.coalesce(func.sum(AiRequestLog.input_token), 0)).where(and_(*ai_filter))) or 0,
+            "outputToken": db.scalar(select(func.coalesce(func.sum(AiRequestLog.output_token), 0)).where(and_(*ai_filter))) or 0,
+            "totalToken": db.scalar(select(func.coalesce(func.sum(AiRequestLog.total_token), 0)).where(and_(*ai_filter))) or 0,
         }
 
 
diff --git a/ai_knowledge_base_v2/apps/user-client/src/App.vue b/ai_knowledge_base_v2/apps/user-client/src/App.vue
index 5665ba8..690f5e2 100644
--- a/ai_knowledge_base_v2/apps/user-client/src/App.vue
+++ b/ai_knowledge_base_v2/apps/user-client/src/App.vue
@@ -199,7 +199,7 @@ async function scrollToBottom() {
         <section class="chat-area">
           <div v-if="messages.length === 0" class="empty-state">
             <strong>可以开始提问了</strong>
-            <p>当前已接入大本营知识库检索链路，若外部服务未配置或权限不足，会在回复区提示具体原因。</p>
+            <p>输入问题，我会尽力为你解答。</p>
           </div>
           <ChatMessage
             v-for="message in messages"
diff --git a/ai_knowledge_base_v2/apps/user-client/src/components/LoginPanel.vue b/ai_knowledge_base_v2/apps/user-client/src/components/LoginPanel.vue
index 41657ec..5d4979f 100644
--- a/ai_knowledge_base_v2/apps/user-client/src/components/LoginPanel.vue
+++ b/ai_knowledge_base_v2/apps/user-client/src/components/LoginPanel.vue
@@ -78,7 +78,7 @@ function showError(text: string) {
   <section class="login-panel">
     <div class="brand-mark">答</div>
     <h1>大本营答疑助手</h1>
-    <p>围绕大本营知识库，为学员提供及时、可信的答疑支持。</p>
+    <p>有问题随时问，帮你快速找到答案。</p>
 
     <label>
       手机号
