diff --git a/tenant-platform/src/api/bugcollect.ts b/tenant-platform/src/api/bugcollect.ts
index 3fd6449..f06a6b5 100644
--- a/tenant-platform/src/api/bugcollect.ts
+++ b/tenant-platform/src/api/bugcollect.ts
@@ -88,10 +88,11 @@ export interface BugCollectPageResult<T> {
 
 export const bugCollectApi = {
   // Overview
-  overview: () => client.get<{ data: BugCollectOverview }>('/bugcollect/v1/overview'),
+  overview: (appKey: string) =>
+    client.get<{ data: BugCollectOverview }>('/bugcollect/v1/overview', { params: { appKey } }),
 
   // Issues
-  issues(params: {
+  issues(appKey: string, params: {
     type?: string
     platform?: string
     startDate?: string
@@ -99,7 +100,7 @@ export const bugCollectApi = {
     page?: number
     size?: number
   }) {
-    return client.get<{ data: BugCollectPageResult<BugCollectIssue> }>('/bugcollect/v1/issues', { params })
+    return client.get<{ data: BugCollectPageResult<BugCollectIssue> }>('/bugcollect/v1/issues', { params: { appKey, ...params } })
   },
 
   issueDetail(id: string) {
@@ -107,16 +108,16 @@ export const bugCollectApi = {
   },
 
   // Rankings
-  frequencyRanking() {
-    return client.get<{ data: BugCollectIssueRanking[] }>('/bugcollect/v1/issues/rankings/frequency')
+  frequencyRanking(appKey: string) {
+    return client.get<{ data: BugCollectIssueRanking[] }>('/bugcollect/v1/issues/rankings/frequency', { params: { appKey } })
   },
 
-  riskRanking() {
-    return client.get<{ data: BugCollectIssueRanking[] }>('/bugcollect/v1/issues/rankings/risk')
+  riskRanking(appKey: string) {
+    return client.get<{ data: BugCollectIssueRanking[] }>('/bugcollect/v1/issues/rankings/risk', { params: { appKey } })
   },
 
   // Events
-  events(params: {
+  events(appKey: string, params: {
     eventName?: string
     userId?: string
     startDate?: string
@@ -124,21 +125,21 @@ export const bugCollectApi = {
     page?: number
     size?: number
   }) {
-    return client.get<{ data: BugCollectPageResult<BugCollectEventItem> }>('/bugcollect/v1/events', { params })
+    return client.get<{ data: BugCollectPageResult<BugCollectEventItem> }>('/bugcollect/v1/events', { params: { appKey, ...params } })
   },
 
   // Funnel
-  funnel(steps: string[]) {
+  funnel(appKey: string, steps: string[]) {
     return client.get<{ data: BugCollectFunnelStep[] }>('/bugcollect/v1/events/funnel', {
-      params: { steps: steps.join(',') },
+      params: { appKey, steps: steps.join(',') },
     })
   },
 
   // Webhooks
   webhooks: {
-    list: () => client.get<{ data: BugCollectWebhook[] }>('/bugcollect/v1/webhooks'),
-    create: (data: Omit<BugCollectWebhook, 'id' | 'createdAt' | 'updatedAt'>) =>
-      client.post<{ data: BugCollectWebhook }>('/bugcollect/v1/webhooks', data),
+    list: (appKey: string) => client.get<{ data: BugCollectWebhook[] }>('/bugcollect/v1/webhooks', { params: { appKey } }),
+    create: (appKey: string, data: Omit<BugCollectWebhook, 'id' | 'createdAt' | 'updatedAt'>) =>
+      client.post<{ data: BugCollectWebhook }>('/bugcollect/v1/webhooks', data, { params: { appKey } }),
     update: (id: string, data: Partial<Omit<BugCollectWebhook, 'id' | 'createdAt' | 'updatedAt'>>) =>
       client.put<{ data: BugCollectWebhook }>(`/bugcollect/v1/webhooks/${id}`, data),
     delete: (id: string) => client.delete(`/bugcollect/v1/webhooks/${id}`),
diff --git a/tenant-platform/src/composables/useBugCollectApp.ts b/tenant-platform/src/composables/useBugCollectApp.ts
new file mode 100644
index 0000000..77218f4
--- /dev/null
+++ b/tenant-platform/src/composables/useBugCollectApp.ts
@@ -0,0 +1,48 @@
+import { ref, computed, onMounted } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { appApi, type App } from '@/api/app'
+
+const STORAGE_KEY = 'bugcollect_selected_app_key'
+
+export function useBugCollectApp() {
+  const route = useRoute()
+  const router = useRouter()
+  const apps = ref<App[]>([])
+  const loadingApps = ref(false)
+  const selectedAppKey = ref(localStorage.getItem(STORAGE_KEY) ?? '')
+
+  const appKey = computed(() => {
+    const q = route.query.appKey
+    if (typeof q === 'string' && q.trim()) return q.trim()
+    return selectedAppKey.value
+  })
+
+  async function loadApps() {
+    loadingApps.value = true
+    try {
+      const res = await appApi.list()
+      apps.value = res.data.data ?? []
+    } catch {
+      apps.value = []
+    } finally {
+      loadingApps.value = false
+    }
+  }
+
+  function setApp(key: string) {
+    selectedAppKey.value = key
+    localStorage.setItem(STORAGE_KEY, key)
+    router.replace({ query: { ...route.query, appKey: key } })
+  }
+
+  onMounted(() => {
+    const q = route.query.appKey
+    if (typeof q === 'string' && q.trim()) {
+      selectedAppKey.value = q.trim()
+      localStorage.setItem(STORAGE_KEY, q.trim())
+    }
+    loadApps()
+  })
+
+  return { apps, loadingApps, appKey, setApp }
+}
diff --git a/tenant-platform/src/views/apps/AppDetailView.vue b/tenant-platform/src/views/apps/AppDetailView.vue
index 47ae931..1348f84 100644
--- a/tenant-platform/src/views/apps/AppDetailView.vue
+++ b/tenant-platform/src/views/apps/AppDetailView.vue
@@ -196,10 +196,10 @@
           </div>
           <div class="service-actions">
             <template v-if="isServiceEnabled('BUG_COLLECT')">
-              <el-button size="small" type="primary" plain @click="$router.push('/bugcollect/overview')">
+              <el-button size="small" type="primary" plain @click="$router.push({ path: '/bugcollect/overview', query: { appKey: app.appKey } })">
                 崩溃概览 →
               </el-button>
-              <el-button size="small" @click="$router.push('/bugcollect/issues')">
+              <el-button size="small" @click="$router.push({ path: '/bugcollect/issues', query: { appKey: app.appKey } })">
                 错误列表 →
               </el-button>
             </template>
diff --git a/tenant-platform/src/views/bug-collect/BugCollectEvents.vue b/tenant-platform/src/views/bug-collect/BugCollectEvents.vue
index 3e82480..ee240ab 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectEvents.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectEvents.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">事件流水</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card shadow="never">
       <div class="toolbar responsive-toolbar">
         <el-input
@@ -67,12 +83,16 @@
         @size-change="handleSizeChange"
       />
     </el-card>
+    </template>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { bugCollectApi, type BugCollectEventItem } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const events = ref<BugCollectEventItem[]>([])
 const loading = ref(false)
@@ -94,7 +114,7 @@ function formatTime(ts: string) {
 async function loadData() {
   loading.value = true
   try {
-    const res = await bugCollectApi.events({
+    const res = await bugCollectApi.events(appKey.value, {
       eventName: filters.value.eventName || undefined,
       userId: filters.value.userId || undefined,
       startDate: filters.value.dateRange?.[0] || undefined,
@@ -126,6 +146,8 @@ onMounted(loadData)
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .responsive-toolbar {
   display: flex;
   gap: 12px;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectFunnels.vue b/tenant-platform/src/views/bug-collect/BugCollectFunnels.vue
index 0c6f650..33bad09 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectFunnels.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectFunnels.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">漏斗分析</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card style="margin-bottom: 16px">
       <template #header>配置漏斗步骤</template>
       <div class="funnel-builder">
@@ -37,12 +53,16 @@
         </div>
       </div>
     </el-card>
+    </template>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref } from 'vue'
 import { bugCollectApi, type BugCollectFunnelStep } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const steps = ref(['', ''])
 const funnelData = ref<BugCollectFunnelStep[]>([])
@@ -66,7 +86,7 @@ async function analyze() {
   if (validSteps.length < 2) return
   loading.value = true
   try {
-    const res = await bugCollectApi.funnel(validSteps)
+    const res = await bugCollectApi.funnel(appKey.value, validSteps)
     funnelData.value = res.data.data
   } catch {
   } finally {
@@ -76,6 +96,8 @@ async function analyze() {
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .funnel-builder {
   display: flex;
   flex-direction: column;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectIssues.vue b/tenant-platform/src/views/bug-collect/BugCollectIssues.vue
index d47cc41..6237fa0 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectIssues.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectIssues.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">错误列表</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card shadow="never">
       <div class="toolbar responsive-toolbar">
         <el-select v-model="filters.type" placeholder="错误类型" style="width: 150px" clearable @change="loadData">
@@ -66,12 +82,16 @@
         @size-change="handleSizeChange"
       />
     </el-card>
+    </template>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { bugCollectApi, type BugCollectIssue } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const issues = ref<BugCollectIssue[]>([])
 const loading = ref(false)
@@ -103,7 +123,7 @@ function formatTime(ts: string) {
 async function loadData() {
   loading.value = true
   try {
-    const res = await bugCollectApi.issues({
+    const res = await bugCollectApi.issues(appKey.value, {
       type: filters.value.type || undefined,
       platform: filters.value.platform || undefined,
       startDate: filters.value.dateRange?.[0] || undefined,
@@ -135,6 +155,8 @@ onMounted(loadData)
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .responsive-toolbar {
   display: flex;
   gap: 12px;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectOverview.vue b/tenant-platform/src/views/bug-collect/BugCollectOverview.vue
index 13b198b..a3f6058 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectOverview.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectOverview.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">Bug 概览</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <!-- Stats Cards -->
     <el-row :gutter="16">
       <el-col :span="6">
@@ -77,6 +93,7 @@
         </el-table-column>
       </el-table>
     </el-card>
+    </template>
   </div>
 </template>
 
@@ -84,6 +101,9 @@
 import { ref, onMounted, computed } from 'vue'
 import { bugCollectApi, type BugCollectOverview } from '@/api/bugcollect'
 import { Warning, Plus, User } from '@element-plus/icons-vue'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const overview = ref<BugCollectOverview>({
   totalIssues: 0,
@@ -115,13 +135,15 @@ function issueTypeTag(type: string) {
 
 onMounted(async () => {
   try {
-    const res = await bugCollectApi.overview()
+    const res = await bugCollectApi.overview(appKey.value)
     overview.value = res.data.data
   } catch {}
 })
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .trend-chart {
   display: flex;
   align-items: flex-end;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectRankFreq.vue b/tenant-platform/src/views/bug-collect/BugCollectRankFreq.vue
index 2359a99..5f91699 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectRankFreq.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectRankFreq.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">高频错误排行</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card shadow="never">
       <el-table :data="rankings" v-loading="loading" border stripe>
         <el-table-column type="index" label="#" width="60" />
@@ -27,12 +43,16 @@
         </el-table-column>
       </el-table>
     </el-card>
+    </template>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { bugCollectApi, type BugCollectIssueRanking } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const rankings = ref<BugCollectIssueRanking[]>([])
 const loading = ref(false)
@@ -55,7 +75,7 @@ function formatTime(ts: string) {
 onMounted(async () => {
   loading.value = true
   try {
-    const res = await bugCollectApi.frequencyRanking()
+    const res = await bugCollectApi.frequencyRanking(appKey.value)
     rankings.value = res.data.data
   } catch {
   } finally {
@@ -65,6 +85,8 @@ onMounted(async () => {
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .time-text {
   font-size: 13px;
   color: #666;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectRankRisk.vue b/tenant-platform/src/views/bug-collect/BugCollectRankRisk.vue
index 114ea05..7b63117 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectRankRisk.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectRankRisk.vue
@@ -2,6 +2,22 @@
   <div>
     <h2 style="margin-bottom: 24px">高危排行</h2>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card shadow="never">
       <el-table :data="rankings" v-loading="loading" border stripe>
         <el-table-column type="index" label="#" width="60" />
@@ -32,12 +48,16 @@
         </el-table-column>
       </el-table>
     </el-card>
+    </template>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { bugCollectApi, type BugCollectIssueRanking } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const rankings = ref<BugCollectIssueRanking[]>([])
 const loading = ref(false)
@@ -67,7 +87,7 @@ function formatTime(ts: string) {
 onMounted(async () => {
   loading.value = true
   try {
-    const res = await bugCollectApi.riskRanking()
+    const res = await bugCollectApi.riskRanking(appKey.value)
     rankings.value = res.data.data
   } catch {
   } finally {
@@ -77,6 +97,8 @@ onMounted(async () => {
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .time-text {
   font-size: 13px;
   color: #666;
diff --git a/tenant-platform/src/views/bug-collect/BugCollectWebhooks.vue b/tenant-platform/src/views/bug-collect/BugCollectWebhooks.vue
index 3c338be..0375952 100644
--- a/tenant-platform/src/views/bug-collect/BugCollectWebhooks.vue
+++ b/tenant-platform/src/views/bug-collect/BugCollectWebhooks.vue
@@ -5,6 +5,22 @@
       <el-button type="primary" @click="openDialog()">新增 Webhook</el-button>
     </div>
 
+    <!-- App selector bar -->
+    <div class="app-selector-bar">
+      <span class="selector-label">选择应用</span>
+      <el-select
+        :model-value="appKey"
+        placeholder="请选择应用"
+        style="width:220px"
+        :loading="loadingApps"
+        @change="setApp"
+      >
+        <el-option v-for="a in apps" :key="a.appKey" :label="a.name" :value="a.appKey" />
+      </el-select>
+    </div>
+    <el-empty v-if="!appKey" description="请选择一个应用" style="margin-top:80px" />
+    <template v-else>
+
     <el-card shadow="never">
       <el-table :data="webhooks" v-loading="loading" border stripe>
         <el-table-column prop="url" label="回调地址" min-width="300" show-overflow-tooltip />
@@ -33,6 +49,7 @@
         </el-table-column>
       </el-table>
     </el-card>
+    </template>
 
     <!-- Dialog -->
     <el-dialog
@@ -73,6 +90,9 @@
 import { ref, onMounted } from 'vue'
 import { ElMessage } from 'element-plus'
 import { bugCollectApi, type BugCollectWebhook } from '@/api/bugcollect'
+import { useBugCollectApp } from '@/composables/useBugCollectApp'
+
+const { apps, loadingApps, appKey, setApp } = useBugCollectApp()
 
 const webhooks = ref<BugCollectWebhook[]>([])
 const loading = ref(false)
@@ -90,7 +110,7 @@ const form = ref({
 async function loadWebhooks() {
   loading.value = true
   try {
-    const res = await bugCollectApi.webhooks.list()
+    const res = await bugCollectApi.webhooks.list(appKey.value)
     webhooks.value = res.data.data
   } catch {
   } finally {
@@ -122,7 +142,7 @@ async function handleSave() {
       await bugCollectApi.webhooks.update(editingId.value, form.value)
       ElMessage.success('更新成功')
     } else {
-      await bugCollectApi.webhooks.create(form.value)
+      await bugCollectApi.webhooks.create(appKey.value, form.value)
       ElMessage.success('创建成功')
     }
     dialogVisible.value = false
@@ -145,6 +165,8 @@ onMounted(loadWebhooks)
 </script>
 
 <style scoped>
+.app-selector-bar { display:flex; align-items:center; gap:12px; margin-bottom:20px; }
+.selector-label { font-size:14px; color:#606266; }
 .toolbar-space-between {
   display: flex;
   justify-content: space-between;