diff --git a/src/components/sidebar/index.tsx b/src/components/sidebar/index.tsx
index a6dde77..a43c742 100644
--- a/src/components/sidebar/index.tsx
+++ b/src/components/sidebar/index.tsx
@@ -1,40 +1,98 @@
-import { Sidebar, SidebarContent, SidebarFooter, SidebarGroup, SidebarGroupContent, SidebarGroupLabel, SidebarHeader, SidebarMenuButton, SidebarMenuItem } from "@/components/ui/sidebar";
-import { tools } from "@/components/tool";
+import type { ReactNode } from "react";
+import { Sidebar, SidebarContent, SidebarFooter, SidebarGroup, SidebarGroupContent, SidebarGroupLabel, SidebarHeader, SidebarMenuButton, SidebarMenuItem, SidebarMenu, SidebarMenuSub, SidebarMenuSubItem, SidebarMenuSubButton } from "@/components/ui/sidebar";
+import { Collapsible, CollapsibleTrigger, CollapsibleContent } from "@/components/ui/collapsible";
+import { tools, type Tool } from "@/components/tool";
 import { Link } from "react-router-dom";
 import { ModeToggle } from "@/components/theme/toggle";
 import { Button } from "../ui/button";
+import { ChevronRight } from "lucide-react";
 
-export const AppSidebar = () => (
-  <Sidebar>
-    <SidebarHeader className="text-2xl font-bold flex justify-center items-center">
-      Lite Kit
-    </SidebarHeader>
-    <SidebarContent>
-      <SidebarGroup>
-        <SidebarGroupLabel>
-          Tools
-        </SidebarGroupLabel>
-        <SidebarGroupContent>
-          {
-            tools.map((tool) => (
-              <SidebarMenuItem key={tool.name}>
-                <SidebarMenuButton asChild>
-                  <Link to={`/tool/${tool.path}`} title={tool.description}>
-                    {tool.icon}
-                    {tool.name}
-                  </Link>
-                </SidebarMenuButton>
-              </SidebarMenuItem>
-            ))
-          }
-        </SidebarGroupContent>
-      </SidebarGroup>
-    </SidebarContent>
-    <SidebarFooter className="flex flex-row justify-between items-center gap-2">
-      <Button variant="link">
-        <a href="mailto:litek@mail.typist.cc">need more tools?</a>
-      </Button>
-      <ModeToggle />
-    </SidebarFooter>
-  </Sidebar>
-)
\ No newline at end of file
+export const AppSidebar = () => {
+  // 递归构建完整路径
+  const buildFullPath = (pathSegments: string[]): string => {
+    return `/tool/${pathSegments.join("/")}`;
+  };
+
+  // 递归渲染菜单项
+  const renderMenuItem = (tool: Tool, parentPaths: string[] = []): ReactNode => {
+    const currentPaths = [...parentPaths, tool.path];
+
+    if (tool.children) {
+      // 有子菜单的项目
+      return (
+        <Collapsible
+          key={tool.name}
+          defaultOpen={false}
+          className="group/collapsible"
+        >
+          <SidebarMenuItem>
+            <CollapsibleTrigger asChild>
+              <SidebarMenuButton tooltip={tool.description}>
+                {tool.icon}
+                <span>{tool.name}</span>
+                <ChevronRight className="ml-auto transition-transform duration-200 group-data-[state=open]/collapsible:rotate-90" />
+              </SidebarMenuButton>
+            </CollapsibleTrigger>
+            <CollapsibleContent>
+              <SidebarMenuSub>
+                {tool.children.map((child) => (
+                  <SidebarMenuSubItem key={child.name}>
+                    {child.children ? (
+                      renderMenuItem(child, currentPaths)
+                    ) : (
+                      <SidebarMenuSubButton asChild>
+                        <Link
+                          to={buildFullPath([...currentPaths, child.path])}
+                          title={child.description}
+                        >
+                          {child.icon}
+                          <span>{child.name}</span>
+                        </Link>
+                      </SidebarMenuSubButton>
+                    )}
+                  </SidebarMenuSubItem>
+                ))}
+              </SidebarMenuSub>
+            </CollapsibleContent>
+          </SidebarMenuItem>
+        </Collapsible>
+      );
+    }
+
+    // 没有子菜单的项目
+    return (
+      <SidebarMenuItem key={tool.name}>
+        <SidebarMenuButton asChild tooltip={tool.description}>
+          <Link to={buildFullPath(currentPaths)}>
+            {tool.icon}
+            <span>{tool.name}</span>
+          </Link>
+        </SidebarMenuButton>
+      </SidebarMenuItem>
+    );
+  };
+
+  return (
+    <Sidebar>
+      <SidebarHeader className="text-2xl font-bold flex justify-center items-center">
+        Lite Kit
+      </SidebarHeader>
+      <SidebarContent>
+        <SidebarGroup>
+          <SidebarGroupLabel>Tools</SidebarGroupLabel>
+          <SidebarGroupContent>
+            <SidebarMenu>
+              {tools.map((tool) => renderMenuItem(tool))}
+            </SidebarMenu>
+          </SidebarGroupContent>
+        </SidebarGroup>
+      </SidebarContent>
+      <SidebarFooter className="flex flex-row justify-between items-center gap-2">
+        <Button variant="link">
+          <a href="mailto:litek@mail.typist.cc">need more tools?</a>
+        </Button>
+        <ModeToggle />
+      </SidebarFooter>
+    </Sidebar>
+  );
+};
\ No newline at end of file