diff --git a/apps/desktop/src/main/plugins/plugin-host.ts b/apps/desktop/src/main/plugins/plugin-host.ts
index 6e4898e..354df93 100644
--- a/apps/desktop/src/main/plugins/plugin-host.ts
+++ b/apps/desktop/src/main/plugins/plugin-host.ts
@@ -37,6 +37,8 @@ export const EXTERNAL_PLUGINS_ENABLED = !app.isPackaged || process.env.ASO_EXTER
 interface ResolvedPlugin {
   manifest: PluginManifest
   source: 'builtin' | 'external'
+  /** 外置来源目录类别（管理页分组展示用） */
+  origin?: 'user' | 'project' | 'global'
   /** 外置插件根目录（plugin:// 映射根） */
   dir?: string
   /** 内置：第一方工厂 / 渲染层组件 key */
@@ -145,10 +147,12 @@ class PluginHost {
     }
 
     if (EXTERNAL_PLUGINS_ENABLED) {
-      const roots = [this.externalRoot]
-      if (this.projectExtensionsDir) roots.push(this.projectExtensionsDir)
-      roots.push(join(getAgentDir(), 'extensions'))
-      for (const root of roots) {
+      const roots: Array<{ root: string; origin: 'user' | 'project' | 'global' }> = [
+        { root: this.externalRoot, origin: 'user' }
+      ]
+      if (this.projectExtensionsDir) roots.push({ root: this.projectExtensionsDir, origin: 'project' })
+      roots.push({ root: join(getAgentDir(), 'extensions'), origin: 'global' })
+      for (const { root, origin } of roots) {
         if (!existsSync(root)) continue
         let entries: import('node:fs').Dirent[]
         try {
@@ -177,11 +181,12 @@ class PluginHost {
               manifest,
               source: 'external',
               dir,
+              origin,
               error: `需要契约版本 >= ${manifest.minContract}（当前 ${HARNESS_CONTRACT_VERSION}）`
             })
             continue
           }
-          byId.set(manifest.id, { manifest, source: 'external', dir })
+          byId.set(manifest.id, { manifest, source: 'external', dir, origin })
         }
       }
     }
@@ -275,6 +280,7 @@ class PluginHost {
       .map((p) => ({
         manifest: p.manifest,
         source: p.source,
+        origin: p.origin,
         enabled: this.isEnabled(p.manifest.id),
         hasMain: Boolean(p.builtinFactory ?? p.externalFactory),
         hasPage: Boolean(p.source === 'external' && p.manifest.entry?.page),
diff --git a/apps/desktop/src/renderer/src/components/SettingsModal.tsx b/apps/desktop/src/renderer/src/components/SettingsModal.tsx
index 3a1cdc1..9dab9b7 100644
--- a/apps/desktop/src/renderer/src/components/SettingsModal.tsx
+++ b/apps/desktop/src/renderer/src/components/SettingsModal.tsx
@@ -53,16 +53,12 @@ const NAV: Array<{ group: string; items: Array<{ id: Tab; label: string; icon: I
   }
 ]
 
-const PLACEHOLDER: Record<string, string> = {
-  plugins: '安装扩展插件，为 Agent 增加新的工具与界面能力。'
-}
-
 const TAB_META: Record<Tab, { title: string; desc: string }> = {
   general: { title: '常规', desc: '主题色等外观偏好。' },
-    corePlugins: { title: '核心插件', desc: '内置的第一方功能插件，官方维护' },
+  corePlugins: { title: '核心插件', desc: '内置的第一方功能插件，官方维护' },
   model: { title: '模型设置', desc: '' },
-    prompt: { title: '系统提示词', desc: '' },
-  plugins: { title: '插件', desc: PLACEHOLDER.plugins },
+  prompt: { title: '系统提示词', desc: '' },
+  plugins: { title: '插件', desc: '第三方扩展插件（商店 / 项目 / 全局目录），按需启停。' },
   skills: { title: '技能', desc: 'SKILL.md 技能包，Agent 自动按需加载。' },
   commands: { title: '命令', desc: '聊天中 / 触发的自定义命令模板。' }
 }
@@ -685,6 +681,80 @@ function CorePluginPanel({
   )
 }
 
+/** 第三方插件页：外置插件按来源分组（商店 / 项目 .pi/extensions / 全局扩展目录），启停机制与核心插件相同 */
+function ExternalPluginPanel({
+  togglingId,
+  onToggle,
+  devBuild
+}: {
+  togglingId: string | null
+  onToggle: (plugin: PluginInfo, next: boolean) => void
+  /** 开发版构建（第三方装载开关开启）；用户版展示关闭提示 */
+  devBuild: boolean
+}): ReactNode {
+  const external = usePluginList().filter((p) => p.source === 'external')
+  const groups = [
+    { label: '商店插件', hint: 'userData/plugins', items: external.filter((p) => p.origin === 'user') },
+    { label: '项目插件', hint: '.pi/extensions（当前工作区）', items: external.filter((p) => p.origin === 'project') },
+    { label: '全局插件', hint: '~/.pi/agent/extensions', items: external.filter((p) => p.origin === 'global') }
+  ].filter((g) => g.items.length > 0)
+
+  if (groups.length === 0) {
+    return (
+      <div className="flex flex-col items-center justify-center gap-1 rounded-card border border-dashed border-line py-12 text-center">
+        <div className="text-[13px] font-medium text-ink-2">
+          {devBuild ? '暂无第三方插件' : '第三方插件装载已关闭（用户版构建）'}
+        </div>
+        {devBuild && (
+          <div className="text-[11.5px] text-ink-3">把含 manifest.json 的插件目录放入上方任一来源即可自动识别</div>
+        )}
+      </div>
+    )
+  }
+  return (
+    <div className="space-y-4">
+      {groups.map((group) => (
+        <div key={group.label}>
+          <div className="flex items-baseline gap-1.5 pb-1.5">
+            <span className="text-[11.5px] font-medium text-ink-2">{group.label}</span>
+            <span className="font-mono text-[10.5px] text-ink-3">{group.hint}</span>
+          </div>
+          <div className="space-y-1.5">
+            {group.items
+              .slice()
+              .sort((a, b) => a.manifest.id.localeCompare(b.manifest.id))
+              .map((p) => (
+                <div key={p.manifest.id} className="rounded-card border border-line px-3 py-2.5">
+                  <div className="flex items-center gap-2">
+                    <span className="text-[12.5px] font-medium text-ink">{p.manifest.name}</span>
+                    <span className="rounded-control bg-hover px-1.5 py-0.5 text-[10px] text-ink-3">v{p.manifest.version}</span>
+                    <span className="ml-auto text-[11px] text-ink-3">{p.enabled ? '已启用' : '已停用'}</span>
+                    <button
+                      type="button"
+                      role="switch"
+                      aria-checked={p.enabled}
+                      aria-label={`启用${p.manifest.name}`}
+                      disabled={togglingId !== null}
+                      onClick={() => onToggle(p, !p.enabled)}
+                      className={`relative h-6 w-10 shrink-0 rounded-full transition-colors disabled:cursor-not-allowed disabled:opacity-50 ${
+                        p.enabled ? 'bg-accent' : 'bg-line-strong'
+                      }`}
+                    >
+                      <span
+                        className={`absolute top-0.5 size-5 rounded-full bg-white shadow transition-[left] ${p.enabled ? 'left-[18px]' : 'left-0.5'}`}
+                      />
+                    </button>
+                  </div>
+                  {p.manifest.description && <div className="mt-1 text-[12px] leading-5 text-ink-3">{p.manifest.description}</div>}
+                  {p.error && <div className="mt-1 text-[12px] text-red">装载失败：{p.error}</div>}
+                </div>
+              ))}
+          </div>
+        </div>
+      ))}
+    </div>
+  )
+}
 /** 系统提示词预览：整段 pi 提示词是大文本，memo 化避免弹窗内任意状态变化触发重渲染；挂载耗时靠过渡提交兜住 */
 const PromptPreview = memo(function PromptPreview({ loading, text }: { loading: boolean; text: string }): ReactNode {
   return (
@@ -773,8 +843,8 @@ export function SettingsModal({
       .finally(() => setBusy(false))
   }
 
-  /** 切换核心插件启停：主进程持久化后重建运行时；列表经 plugins:listChanged 自动刷新 */
-  const toggleCorePlugin = (plugin: PluginInfo, next: boolean): void => {
+  /** 切换插件启停（内置/外置同机制）：主进程持久化后重建运行时；列表经 plugins:listChanged 自动刷新 */
+  const togglePlugin = (plugin: PluginInfo, next: boolean): void => {
     if (streaming) {
       setNotice({ kind: 'err', text: 'Agent 正在回复中，请先停止或等待完成后再切换（切换会重建运行时）' })
       return
@@ -984,7 +1054,11 @@ export function SettingsModal({
               </div>
             )}
 
-            {tab === 'corePlugins' && <CorePluginPanel togglingId={togglingId} onToggle={toggleCorePlugin} />}
+            {tab === 'corePlugins' && <CorePluginPanel togglingId={togglingId} onToggle={togglePlugin} />}
+
+            {tab === 'plugins' && (
+              <ExternalPluginPanel togglingId={togglingId} onToggle={togglePlugin} devBuild={import.meta.env.DEV} />
+            )}
 
             {tab === 'prompt' && (
               <div className="flex h-full min-h-0 flex-col">
@@ -1093,7 +1167,7 @@ export function SettingsModal({
               />
             )}
 
-            {tab !== 'general' && tab !== 'corePlugins' && tab !== 'model' && tab !== 'prompt' && tab !== 'skills' && tab !== 'commands' && (
+            {tab !== 'general' && tab !== 'corePlugins' && tab !== 'plugins' && tab !== 'model' && tab !== 'prompt' && tab !== 'skills' && tab !== 'commands' && (
               <ComingSoon icon={NAV[1].items.find((i) => i.id === tab)?.icon ?? LuPuzzle} label={meta.title} />
             )}
           </div>
diff --git a/apps/desktop/src/shared/types.ts b/apps/desktop/src/shared/types.ts
index 35374e4..0037562 100644
--- a/apps/desktop/src/shared/types.ts
+++ b/apps/desktop/src/shared/types.ts
@@ -367,6 +367,8 @@ import type { PluginManifest, StatusItem, ToolbarButtonDef } from '@aso/plugin-s
 export interface PluginInfo {
   manifest: PluginManifest
   source: 'builtin' | 'external'
+  /** 外置来源目录类别（仅 external）：user=商店目录 / project=项目 .pi/extensions / global=全局扩展目录 */
+  origin?: 'user' | 'project' | 'global'
   enabled: boolean
   /** 有主进程工厂（pi 工具/事件/内联 UI 注册能力） */
   hasMain: boolean