diff --git a/app/(admin)/layout.tsx b/app/(admin)/layout.tsx
index 14e1523b1..28b38f801 100644
--- a/app/(admin)/layout.tsx
+++ b/app/(admin)/layout.tsx
@@ -31,6 +31,9 @@ export default async function AdminLayout({
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
+        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialEnabled={siteSettings.tutorialEnabled ?? false}
+        rankingEnabled={siteSettings.rankingEnabled ?? true}
       />
       <div className="flex-1 pt-16">{children}</div>
     </div>
diff --git a/app/(admin)/settings/admin-settings-client.tsx b/app/(admin)/settings/admin-settings-client.tsx
index b179b7f58..1ce59d6f8 100644
--- a/app/(admin)/settings/admin-settings-client.tsx
+++ b/app/(admin)/settings/admin-settings-client.tsx
@@ -159,6 +159,9 @@ type SiteSettings = {
   toolbox1Enabled: boolean;
   toolbox2Name: string;
   toolbox2Enabled: boolean;
+  tutorialVideoUrl: string | null;
+  tutorialEnabled: boolean;
+  rankingEnabled: boolean;
 };
 
 type NavLink = {
@@ -357,6 +360,9 @@ export function AdminSettingsClient() {
     toolbox1Enabled: true,
     toolbox2Name: "工具箱2",
     toolbox2Enabled: false,
+    tutorialVideoUrl: null,
+    tutorialEnabled: false,
+    rankingEnabled: true,
   });
 
   useEffect(() => {
@@ -379,6 +385,9 @@ export function AdminSettingsClient() {
         toolbox1Enabled: siteSettingsData.toolbox1Enabled ?? true,
         toolbox2Name: siteSettingsData.toolbox2Name || "工具箱2",
         toolbox2Enabled: siteSettingsData.toolbox2Enabled ?? false,
+        tutorialVideoUrl: siteSettingsData.tutorialVideoUrl || null,
+        tutorialEnabled: siteSettingsData.tutorialEnabled ?? false,
+        rankingEnabled: siteSettingsData.rankingEnabled ?? true,
       });
     }
   }, [siteSettingsData]);
@@ -2537,8 +2546,51 @@ export function AdminSettingsClient() {
                 />
               </div>
 
+              {/* 精选榜设置 */}
+              <div className="flex items-center justify-between rounded-lg border p-4">
+                <div className="flex-1 space-y-1">
+                  <Label className="text-base">精选榜</Label>
+                  <div className="text-sm text-muted-foreground">
+                    控制是否在导航栏显示精选榜按钮
+                  </div>
+                </div>
+                <Switch
+                  checked={siteSettings.rankingEnabled}
+                  onCheckedChange={(checked) => setSiteSettings({ ...siteSettings, rankingEnabled: checked })}
+                />
+              </div>
+
+              {/* 功能教程设置 */}
+              <div className="rounded-lg border p-4 space-y-4">
+                <div className="flex items-center justify-between">
+                  <div className="flex-1 space-y-1">
+                    <Label className="text-base">功能教程</Label>
+                    <div className="text-sm text-muted-foreground">
+                      启用后在导航栏显示功能教程按钮，点击后弹窗播放视频
+                    </div>
+                  </div>
+                  <Switch
+                    checked={siteSettings.tutorialEnabled}
+                    onCheckedChange={(checked) => setSiteSettings({ ...siteSettings, tutorialEnabled: checked })}
+                  />
+                </div>
+                {siteSettings.tutorialEnabled && (
+                  <div className="space-y-2">
+                    <Label>视频链接</Label>
+                    <Input
+                      value={siteSettings.tutorialVideoUrl || ""}
+                      onChange={(e) => setSiteSettings({ ...siteSettings, tutorialVideoUrl: e.target.value || null })}
+                      placeholder="输入视频播放链接，支持 MP4、YouTube、Bilibili 等"
+                    />
+                    <div className="text-xs text-muted-foreground">
+                      支持直接视频链接（如 .mp4）或嵌入式播放链接
+                    </div>
+                  </div>
+                )}
+              </div>
+
               <Button onClick={handleSaveSiteSettings}>
-                <Save className="mr-2 h-4 w-4" /> 保存工具箱设置
+                <Save className="mr-2 h-4 w-4" /> 保存导航设置
               </Button>
             </CardContent>
           </Card>
diff --git a/app/(chat)/layout.tsx b/app/(chat)/layout.tsx
index 842c96e3c..faa6134e0 100644
--- a/app/(chat)/layout.tsx
+++ b/app/(chat)/layout.tsx
@@ -51,6 +51,9 @@ async function SidebarWrapper({ children }: { children: React.ReactNode }) {
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
+        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialEnabled={siteSettings.tutorialEnabled ?? false}
+        rankingEnabled={siteSettings.rankingEnabled ?? true}
       />
       <div className="pt-14 flex h-full w-full overflow-hidden"> {/* Add padding-top for fixed navbar */}
         <AppSidebar user={session?.user} />
diff --git a/app/api/site-settings/route.ts b/app/api/site-settings/route.ts
index bda162754..a9faae495 100644
--- a/app/api/site-settings/route.ts
+++ b/app/api/site-settings/route.ts
@@ -38,6 +38,9 @@ export async function GET() {
         toolbox1Enabled: true,
         toolbox2Name: "工具箱2",
         toolbox2Enabled: false,
+        tutorialVideoUrl: null,
+        tutorialEnabled: false,
+        rankingEnabled: true,
     };
     
     const response = NextResponse.json({
@@ -78,6 +81,9 @@ const updateSchema = z.object({
   toolbox1Enabled: z.boolean().optional(),
   toolbox2Name: z.string().max(64).optional(),
   toolbox2Enabled: z.boolean().optional(),
+  tutorialVideoUrl: z.string().nullable().optional(),
+  tutorialEnabled: z.boolean().optional(),
+  rankingEnabled: z.boolean().optional(),
 });
 
 // PUT /api/site-settings - 更新网站设置（仅管理员）
@@ -134,6 +140,9 @@ export async function PUT(request: NextRequest) {
           toolbox1Enabled: data.toolbox1Enabled ?? true,
           toolbox2Name: data.toolbox2Name ?? "工具箱2",
           toolbox2Enabled: data.toolbox2Enabled ?? false,
+          tutorialVideoUrl: data.tutorialVideoUrl,
+          tutorialEnabled: data.tutorialEnabled ?? false,
+          rankingEnabled: data.rankingEnabled ?? true,
           updatedBy: session.user.id,
         })
         .returning();
diff --git a/app/canvas/[id]/layout.tsx b/app/canvas/[id]/layout.tsx
index cdb8e28e1..f57435046 100644
--- a/app/canvas/[id]/layout.tsx
+++ b/app/canvas/[id]/layout.tsx
@@ -47,6 +47,9 @@ async function CanvasLayoutWrapper({ children }: { children: React.ReactNode })
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
+        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialEnabled={siteSettings.tutorialEnabled ?? false}
+        rankingEnabled={siteSettings.rankingEnabled ?? true}
       />
       <div className="pt-12 h-full">
         {children}
diff --git a/components/top-navbar.tsx b/components/top-navbar.tsx
index 9943aa9d7..ae37db574 100644
--- a/components/top-navbar.tsx
+++ b/components/top-navbar.tsx
@@ -2,7 +2,7 @@
 
 import { useRouter } from "next/navigation";
 import Link from "next/link";
-import { Settings, ExternalLink, Briefcase, Images, Sparkles, Trophy, Building2, Crown, Medal, Award, Edit, LayoutGrid } from "lucide-react";
+import { Settings, ExternalLink, Briefcase, Images, Sparkles, Trophy, Building2, Crown, Medal, Award, Edit, LayoutGrid, PlayCircle, X } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { useTheme } from "next-themes";
 import { useState, useEffect, useRef } from "react";
@@ -40,6 +40,9 @@ type TopNavbarProps = {
   toolbox1Enabled?: boolean;
   toolbox2Name?: string;
   toolbox2Enabled?: boolean;
+  tutorialVideoUrl?: string | null;
+  tutorialEnabled?: boolean;
+  rankingEnabled?: boolean;
 };
 
 export function TopNavbar({
@@ -52,12 +55,16 @@ export function TopNavbar({
   toolbox1Enabled = true,
   toolbox2Name = "工具箱2",
   toolbox2Enabled = false,
+  tutorialVideoUrl,
+  tutorialEnabled = false,
+  rankingEnabled = true,
 }: TopNavbarProps) {
   const router = useRouter();
   const { resolvedTheme } = useTheme();
   const [mounted, setMounted] = useState(false);
   const [ranking, setRanking] = useState<RankingItem[]>([]);
   const [rankingOpen, setRankingOpen] = useState(false);
+  const [showTutorialModal, setShowTutorialModal] = useState(false);
   const [showImageEditor, setShowImageEditor] = useState(false);
   const [editorImageUrl, setEditorImageUrl] = useState<string>("");
   // 移除 fileInputRef，不再需要外部上传
@@ -242,60 +249,77 @@ export function TopNavbar({
           <span>AI精选</span>
         </a>
 
+        {/* 功能教程 */}
+        {tutorialEnabled && tutorialVideoUrl && (
+          <Button
+            variant="ghost"
+            size="sm"
+            className="flex items-center gap-1 h-8 px-3 text-white hover:bg-white/15 hover:text-white rounded-full transition-colors"
+            onClick={() => setShowTutorialModal(true)}
+            type="button"
+            title="功能教程"
+          >
+            <PlayCircle className="h-4 w-4 text-green-400" />
+            <span className="text-sm font-medium">功能教程</span>
+          </Button>
+        )}
+
         {/* 精选榜单 */}
-        <DropdownMenu open={rankingOpen} onOpenChange={setRankingOpen}>
-          <DropdownMenuTrigger asChild>
-            <Button
-              variant="ghost"
-              size="sm"
-              className="flex items-center gap-1 h-8 px-3 text-white hover:bg-white/15 hover:text-white rounded-full transition-colors"
-              type="button"
-            >
-              <Trophy className="h-4 w-4 text-orange-400" />
-              <span className="text-sm font-medium">精选榜</span>
-            </Button>
-          </DropdownMenuTrigger>
-          <DropdownMenuContent align="end" className="w-[280px] p-3">
-            <div className="flex items-center gap-2 mb-3 pb-2 border-b">
-              <Trophy className="h-5 w-5 text-orange-500" />
-              <span className="font-semibold">精选榜单 TOP5</span>
-            </div>
-            {ranking.length === 0 ? (
-              <div className="text-center text-muted-foreground py-4 text-sm">
-                暂无精选数据
+        {rankingEnabled && (
+          <DropdownMenu open={rankingOpen} onOpenChange={setRankingOpen}>
+            <DropdownMenuTrigger asChild>
+              <Button
+                variant="ghost"
+                size="sm"
+                className="flex items-center gap-1 h-8 px-3 text-white hover:bg-white/15 hover:text-white rounded-full transition-colors"
+                type="button"
+              >
+                <Trophy className="h-4 w-4 text-orange-400" />
+                <span className="text-sm font-medium">精选榜</span>
+              </Button>
+            </DropdownMenuTrigger>
+            <DropdownMenuContent align="end" className="w-[280px] p-3">
+              <div className="flex items-center gap-2 mb-3 pb-2 border-b">
+                <Trophy className="h-5 w-5 text-orange-500" />
+                <span className="font-semibold">精选榜单 TOP5</span>
               </div>
-            ) : (
-              <div className="space-y-2">
-                {ranking.map((item) => (
-                  <div
-                    key={item.userId}
-                    className={`flex items-center gap-3 p-2 rounded-lg transition-colors ${
-                      item.rank === 1 ? "bg-gradient-to-r from-yellow-50 to-orange-50 dark:from-yellow-900/20 dark:to-orange-900/20" :
-                      item.rank === 2 ? "bg-gray-50 dark:bg-gray-800/50" :
-                      item.rank === 3 ? "bg-amber-50 dark:bg-amber-900/20" :
-                      "hover:bg-muted"
-                    }`}
-                  >
-                    <div className="flex items-center justify-center w-6">
-                      {getRankIcon(item.rank)}
+              {ranking.length === 0 ? (
+                <div className="text-center text-muted-foreground py-4 text-sm">
+                  暂无精选数据
+                </div>
+              ) : (
+                <div className="space-y-2">
+                  {ranking.map((item) => (
+                    <div
+                      key={item.userId}
+                      className={`flex items-center gap-3 p-2 rounded-lg transition-colors ${
+                        item.rank === 1 ? "bg-gradient-to-r from-yellow-50 to-orange-50 dark:from-yellow-900/20 dark:to-orange-900/20" :
+                        item.rank === 2 ? "bg-gray-50 dark:bg-gray-800/50" :
+                        item.rank === 3 ? "bg-amber-50 dark:bg-amber-900/20" :
+                        "hover:bg-muted"
+                      }`}
+                    >
+                      <div className="flex items-center justify-center w-6">
+                        {getRankIcon(item.rank)}
+                      </div>
+                      <div className="flex-1 min-w-0">
+                        <p className="font-medium text-sm truncate">{item.userName}</p>
+                        <p className="text-xs text-muted-foreground flex items-center gap-1 truncate">
+                          <Building2 className="h-3 w-3" />
+                          {item.department}
+                        </p>
+                      </div>
+                      <div className="text-right">
+                        <span className="text-lg font-bold text-orange-500">{item.featuredCount}</span>
+                        <span className="text-xs text-muted-foreground ml-1">精选</span>
+                      </div>
                     </div>
-                    <div className="flex-1 min-w-0">
-                      <p className="font-medium text-sm truncate">{item.userName}</p>
-                      <p className="text-xs text-muted-foreground flex items-center gap-1 truncate">
-                        <Building2 className="h-3 w-3" />
-                        {item.department}
-                      </p>
-                    </div>
-                    <div className="text-right">
-                      <span className="text-lg font-bold text-orange-500">{item.featuredCount}</span>
-                      <span className="text-xs text-muted-foreground ml-1">精选</span>
-                    </div>
-                  </div>
-                ))}
-              </div>
-            )}
-          </DropdownMenuContent>
-        </DropdownMenu>
+                  ))}
+                </div>
+              )}
+            </DropdownMenuContent>
+          </DropdownMenu>
+        )}
 
         {/* 图片编辑 */}
         <Button
@@ -367,6 +391,56 @@ export function TopNavbar({
           onCancel={handleImageEditorCancel}
         />
       )}
+
+      {/* 功能教程弹窗 */}
+      {showTutorialModal && tutorialVideoUrl && (
+        <div 
+          className="fixed inset-0 z-[100] flex items-center justify-center bg-black/80"
+          onClick={() => setShowTutorialModal(false)}
+        >
+          <div 
+            className="relative w-full max-w-4xl mx-4"
+            onClick={(e) => e.stopPropagation()}
+          >
+            {/* 关闭按钮 */}
+            <button
+              onClick={() => setShowTutorialModal(false)}
+              className="absolute -top-12 right-0 text-white hover:text-gray-300 transition-colors"
+              title="关闭"
+            >
+              <X className="h-8 w-8" />
+            </button>
+            
+            {/* 视频播放器 */}
+            <div className="relative w-full aspect-video bg-black rounded-lg overflow-hidden shadow-2xl">
+              {tutorialVideoUrl.includes('youtube.com') || tutorialVideoUrl.includes('youtu.be') ? (
+                // YouTube 嵌入
+                <iframe
+                  src={tutorialVideoUrl.replace('watch?v=', 'embed/').replace('youtu.be/', 'youtube.com/embed/')}
+                  className="w-full h-full"
+                  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+                  allowFullScreen
+                />
+              ) : tutorialVideoUrl.includes('bilibili.com') ? (
+                // Bilibili 嵌入
+                <iframe
+                  src={tutorialVideoUrl.replace('www.bilibili.com/video/', 'player.bilibili.com/player.html?bvid=')}
+                  className="w-full h-full"
+                  allowFullScreen
+                />
+              ) : (
+                // 普通视频链接
+                <video
+                  src={tutorialVideoUrl}
+                  className="w-full h-full"
+                  controls
+                  autoPlay
+                />
+              )}
+            </div>
+          </div>
+        </div>
+      )}
     </nav>
   );
 }
diff --git a/lib/db/queries.ts b/lib/db/queries.ts
index 2c5a273d7..1683d5b54 100644
--- a/lib/db/queries.ts
+++ b/lib/db/queries.ts
@@ -1521,6 +1521,9 @@ export async function getSiteSettings() {
     toolbox1Enabled: true,
     toolbox2Name: "工具箱2",
     toolbox2Enabled: false,
+    tutorialVideoUrl: null,
+    tutorialEnabled: false,
+    rankingEnabled: true,
   };
   try {
     const [settings] = await db.select().from(siteSettings).limit(1);
diff --git a/lib/db/schema.ts b/lib/db/schema.ts
index 505711b24..3d34381dc 100644
--- a/lib/db/schema.ts
+++ b/lib/db/schema.ts
@@ -301,6 +301,11 @@ export const siteSettings = pgTable("SiteSettings", {
   toolbox1Enabled: boolean("toolbox1Enabled").notNull().default(true), // 是否显示工具箱1
   toolbox2Name: varchar("toolbox2Name", { length: 64 }).default("工具箱2"), // 工具箱2名称
   toolbox2Enabled: boolean("toolbox2Enabled").notNull().default(false), // 是否显示工具箱2
+  // 功能教程设置
+  tutorialVideoUrl: text("tutorialVideoUrl"), // 功能教程视频链接
+  tutorialEnabled: boolean("tutorialEnabled").notNull().default(false), // 是否显示功能教程按钮
+  // 精选榜设置
+  rankingEnabled: boolean("rankingEnabled").notNull().default(true), // 是否显示精选榜按钮
   updatedAt: timestamp("updatedAt").notNull().defaultNow(),
   updatedBy: uuid("updatedBy").references(() => user.id),
 });