diff --git a/frontend/src/features/providers/components/BatchAssignModelsDialog.vue b/frontend/src/features/providers/components/BatchAssignModelsDialog.vue
index 19a6b1093..2c38f7cbf 100644
--- a/frontend/src/features/providers/components/BatchAssignModelsDialog.vue
+++ b/frontend/src/features/providers/components/BatchAssignModelsDialog.vue
@@ -98,6 +98,7 @@
                     v-for="model in filteredGlobalModels"
                     :key="model.id"
                     class="flex items-center gap-2 px-2 py-1.5 rounded hover:bg-muted cursor-pointer"
+                    :data-testid="`batch-assign-model-${model.id}`"
                     @click="toggleGlobalModelSelection(model.id)"
                   >
                     <div
@@ -255,15 +256,29 @@ const existingGlobalModelIds = computed(() => {
   )
 })
 
-// 过滤后的全局模型
+function globalModelMatchesQuery(model: GlobalModelResponse, query: string): boolean {
+  if (!query) return true
+  return model.name.toLowerCase().includes(query) || model.display_name.toLowerCase().includes(query)
+}
+
+function compareGlobalModelsByName(left: GlobalModelResponse, right: GlobalModelResponse): number {
+  const nameA = (left.display_name || left.name || '').toLowerCase()
+  const nameB = (right.display_name || right.name || '').toLowerCase()
+  return nameA.localeCompare(nameB)
+}
+
+// 过滤后的全局模型：当前已勾选/已关联的排在可见结果顶部，便于取消关联
 const filteredGlobalModels = computed(() => {
   const query = searchQuery.value.toLowerCase().trim()
-  return allGlobalModels.value.filter(m => {
-    if (query && !m.name.toLowerCase().includes(query) && !m.display_name.toLowerCase().includes(query)) {
-      return false
-    }
-    return true
-  })
+  const selectedIds = selectedGlobalModelIds.value
+  const matched = allGlobalModels.value.filter(model => globalModelMatchesQuery(model, query))
+  const pinned = matched
+    .filter(model => selectedIds.has(model.id))
+    .sort(compareGlobalModelsByName)
+  const rest = matched
+    .filter(model => !selectedIds.has(model.id))
+    .sort(compareGlobalModelsByName)
+  return [...pinned, ...rest]
 })
 
 // 全局模型是否全选
diff --git a/frontend/src/features/providers/components/__tests__/BatchAssignModelsDialog.loading.spec.ts b/frontend/src/features/providers/components/__tests__/BatchAssignModelsDialog.loading.spec.ts
index 619c29d71..63d4663bc 100644
--- a/frontend/src/features/providers/components/__tests__/BatchAssignModelsDialog.loading.spec.ts
+++ b/frontend/src/features/providers/components/__tests__/BatchAssignModelsDialog.loading.spec.ts
@@ -84,6 +84,36 @@ afterEach(() => {
   }
 })
 
+function createGlobalModel(id: string, name: string, displayName = name) {
+  return {
+    id,
+    name,
+    display_name: displayName,
+    is_active: true,
+    default_tiered_pricing: { tiers: [] },
+    created_at: '2026-01-01T00:00:00Z',
+  }
+}
+
+function createProviderModel(id: string, globalModelId: string) {
+  return {
+    id,
+    provider_id: 'provider-1',
+    global_model_id: globalModelId,
+    provider_model_name: globalModelId,
+    is_active: true,
+    is_available: true,
+    created_at: '2026-01-01T00:00:00Z',
+    updated_at: '2026-01-01T00:00:00Z',
+  }
+}
+
+function visibleModelIds(root: HTMLElement): string[] {
+  return Array.from(root.querySelectorAll('[data-testid^="batch-assign-model-"]'))
+    .map(node => node.getAttribute('data-testid')?.replace('batch-assign-model-', '') ?? '')
+    .filter(Boolean)
+}
+
 describe('BatchAssignModelsDialog loading', () => {
   it('loads model choices when lazily mounted in the open state', async () => {
     const root = document.createElement('div')
@@ -107,4 +137,69 @@ describe('BatchAssignModelsDialog loading', () => {
     expect(endpointMocks.getProviderModels).toHaveBeenCalledWith('provider-1')
     expect(endpointMocks.getProviderKeys).toHaveBeenCalledWith('provider-1')
   })
+
+  it('pins already associated models to the top of the list', async () => {
+    globalModelMocks.getGlobalModels.mockResolvedValue({
+      models: [
+        createGlobalModel('gm-zeta', 'zeta-model', 'Zeta'),
+        createGlobalModel('gm-alpha', 'alpha-model', 'Alpha'),
+        createGlobalModel('gm-mu', 'mu-model', 'Mu'),
+      ],
+      total: 3,
+    })
+    endpointMocks.getProviderModels.mockResolvedValue([
+      createProviderModel('pm-mu', 'gm-mu'),
+    ])
+
+    const root = document.createElement('div')
+    document.body.appendChild(root)
+    const app = createApp(defineComponent({
+      setup() {
+        return () => h(BatchAssignModelsDialog, {
+          open: true,
+          providerId: 'provider-1',
+        })
+      },
+    }))
+    app.mount(root)
+    mountedApps.push({ app, root })
+    await settle()
+
+    expect(visibleModelIds(root)).toEqual(['gm-mu', 'gm-alpha', 'gm-zeta'])
+  })
+
+  it('keeps selected matches pinned above other search results', async () => {
+    globalModelMocks.getGlobalModels.mockResolvedValue({
+      models: [
+        createGlobalModel('gm-beta', 'beta-flash', 'Beta Flash'),
+        createGlobalModel('gm-alpha', 'alpha-flash', 'Alpha Flash'),
+        createGlobalModel('gm-other', 'other-model', 'Other'),
+      ],
+      total: 3,
+    })
+    endpointMocks.getProviderModels.mockResolvedValue([
+      createProviderModel('pm-beta', 'gm-beta'),
+    ])
+
+    const root = document.createElement('div')
+    document.body.appendChild(root)
+    const app = createApp(defineComponent({
+      setup() {
+        return () => h(BatchAssignModelsDialog, {
+          open: true,
+          providerId: 'provider-1',
+        })
+      },
+    }))
+    app.mount(root)
+    mountedApps.push({ app, root })
+    await settle()
+
+    const search = root.querySelector('input') as HTMLInputElement
+    search.value = 'flash'
+    search.dispatchEvent(new Event('input', { bubbles: true }))
+    await settle()
+
+    expect(visibleModelIds(root)).toEqual(['gm-beta', 'gm-alpha'])
+  })
 })
diff --git a/frontend/src/features/providers/components/provider-tabs/ModelsTab.vue b/frontend/src/features/providers/components/provider-tabs/ModelsTab.vue
index eeb7109c1..2f2ea1712 100644
--- a/frontend/src/features/providers/components/provider-tabs/ModelsTab.vue
+++ b/frontend/src/features/providers/components/provider-tabs/ModelsTab.vue
@@ -2,19 +2,58 @@
   <Card class="overflow-hidden">
     <!-- 标题头部 -->
     <div class="p-4 border-b border-border/60">
-      <div class="flex items-center justify-between">
-        <h3 class="text-sm font-semibold flex items-center gap-2">
-          模型列表
-        </h3>
-        <Button
-          variant="outline"
-          size="sm"
-          class="h-8"
-          @click="openBatchAssignDialog"
-        >
-          <Layers class="w-3.5 h-3.5 mr-1.5" />
-          关联模型
-        </Button>
+      <div class="flex items-center justify-between gap-3">
+        <div class="flex items-center gap-2 min-w-0">
+          <Checkbox
+            v-if="!isLoading && models.length > 0"
+            data-testid="models-tab-select-all"
+            class="shrink-0"
+            :checked="isAllSelected"
+            :indeterminate="isPartiallySelected"
+            :aria-label="selectAllLabel"
+            :title="selectAllLabel"
+            @update:checked="toggleSelectAll"
+          />
+          <h3 class="text-sm font-semibold flex items-center gap-2">
+            模型列表
+          </h3>
+          <span
+            v-if="selectedCount > 0"
+            class="text-xs text-muted-foreground tabular-nums"
+          >
+            已选 {{ selectedCount }} 个
+          </span>
+        </div>
+        <div class="flex items-center gap-2 shrink-0">
+          <Button
+            v-if="selectedCount > 0"
+            variant="destructive"
+            size="sm"
+            class="h-8"
+            data-testid="models-tab-delete-selected"
+            :disabled="deletingSelected"
+            @click="confirmDeleteSelected"
+          >
+            <Loader2
+              v-if="deletingSelected"
+              class="w-3.5 h-3.5 mr-1.5 animate-spin"
+            />
+            <Trash2
+              v-else
+              class="w-3.5 h-3.5 mr-1.5"
+            />
+            {{ deletingSelected ? '删除中...' : '删除选中' }}
+          </Button>
+          <Button
+            variant="outline"
+            size="sm"
+            class="h-8"
+            @click="openBatchAssignDialog"
+          >
+            <Layers class="w-3.5 h-3.5 mr-1.5" />
+            关联模型
+          </Button>
+        </div>
       </div>
     </div>
 
@@ -44,10 +83,19 @@
           <tr
             v-for="model in paginatedModels"
             :key="model.id"
-            class="border-b border-border/40 last:border-b-0 hover:bg-muted/30 transition-colors"
+            class="border-b border-border/40 last:border-b-0 transition-colors"
+            :class="isModelSelected(model.id) ? 'bg-primary/5' : 'hover:bg-muted/30'"
           >
             <td class="align-top px-4 py-3">
               <div class="flex items-center gap-2.5">
+                <Checkbox
+                  class="shrink-0"
+                  :data-testid="`models-tab-row-checkbox-${model.id}`"
+                  :checked="isModelSelected(model.id)"
+                  :aria-label="`选择 ${model.global_model_display_name || model.provider_model_name}`"
+                  @click.stop
+                  @update:checked="checked => toggleModelSelection(model.id, checked)"
+                />
                 <!-- 状态指示灯 -->
                 <div
                   class="w-2 h-2 rounded-full shrink-0"
@@ -171,7 +219,12 @@
         v-if="shouldPaginateModels"
         class="px-4 py-2 border-t border-border/40 flex items-center justify-between text-xs text-muted-foreground"
       >
-        <span>共 {{ sortedModels.length }} 个模型</span>
+        <span>
+          共 {{ sortedModels.length }} 个模型
+          <template v-if="selectedCount > 0">
+            · 已选 {{ selectedCount }} 个
+          </template>
+        </span>
         <div class="flex items-center gap-1.5">
           <Button
             variant="ghost"
@@ -251,18 +304,21 @@
 import { ref, computed, watch } from 'vue'
 import { useSmartPagination } from '@/composables/useSmartPagination'
 import { useModelTest } from '@/composables/useModelTest'
-import { Box, Edit, Layers, Power, Copy, Loader2, Play } from 'lucide-vue-next'
+import { Box, Edit, Layers, Power, Copy, Loader2, Play, Trash2 } from 'lucide-vue-next'
 import Card from '@/components/ui/card.vue'
 import Button from '@/components/ui/button.vue'
+import Checkbox from '@/components/ui/checkbox.vue'
 import { useToast } from '@/composables/useToast'
+import { useConfirm } from '@/composables/useConfirm'
 import { useClipboard } from '@/composables/useClipboard'
+import { useI18n } from '@/i18n'
 import { sortResolutionEntries } from '@/utils/form'
 import {
   type Model,
   type ProviderEndpoint,
 } from '@/api/endpoints'
 import { getProviderKeys, type EndpointAPIKey } from '@/api/endpoints/keys'
-import { updateModel } from '@/api/endpoints/models'
+import { deleteModel, updateModel } from '@/api/endpoints/models'
 import { parseApiError } from '@/utils/errorParser'
 import { formatApiFormat } from '@/api/endpoints/types/api-format'
 import type { ProviderWithEndpointsSummary } from '@/api/endpoints'
@@ -296,7 +352,9 @@ const emit = defineEmits<{
 }>()
 
 const { error: showError, success: showSuccess } = useToast()
+const { confirmDanger } = useConfirm()
 const { copyToClipboard } = useClipboard()
+const { legacyT } = useI18n()
 
 // 模型测试 composable
 const modelTest = useModelTest({ providerId: () => props.provider.id })
@@ -305,6 +363,8 @@ const modelTest = useModelTest({ providerId: () => props.provider.id })
 const localLoading = ref(false)
 const localModels = ref<Model[]>([])
 const togglingModelId = ref<string | null>(null)
+const selectedIds = ref<Set<string>>(new Set())
+const deletingSelected = ref(false)
 const pendingTestModel = ref<Model | null>(null)
 const selectedTestEndpoint = ref<ProviderEndpoint | null>(null)
 const testRequestHeadersDraft = ref('')
@@ -385,6 +445,16 @@ const sortedModels = computed(() => {
   })
 })
 
+const selectedCount = computed(() => selectedIds.value.size)
+const isAllSelected = computed(() => (
+  sortedModels.value.length > 0
+  && sortedModels.value.every(model => selectedIds.value.has(model.id))
+))
+const isPartiallySelected = computed(() => (
+  selectedCount.value > 0 && !isAllSelected.value
+))
+const selectAllLabel = computed(() => (isAllSelected.value ? '取消全选' : '全选'))
+
 // ===== 模型列表智能分页 =====
 const modelsListRef = ref<HTMLElement | null>(null)
 const {
@@ -519,6 +589,71 @@ function openBatchAssignDialog() {
   emit('batchAssign')
 }
 
+function isModelSelected(modelId: string): boolean {
+  return selectedIds.value.has(modelId)
+}
+
+function toggleModelSelection(modelId: string, checked?: boolean) {
+  const next = new Set(selectedIds.value)
+  const shouldSelect = checked ?? !next.has(modelId)
+  if (shouldSelect) {
+    next.add(modelId)
+  } else {
+    next.delete(modelId)
+  }
+  selectedIds.value = next
+}
+
+function toggleSelectAll(checked: boolean) {
+  selectedIds.value = checked
+    ? new Set(sortedModels.value.map(model => model.id))
+    : new Set()
+}
+
+function pruneMissingSelection(validIds: Set<string>) {
+  if (selectedIds.value.size === 0) return
+  const next = new Set([...selectedIds.value].filter(id => validIds.has(id)))
+  if (next.size !== selectedIds.value.size) {
+    selectedIds.value = next
+  }
+}
+
+async function confirmDeleteSelected() {
+  const ids = Array.from(selectedIds.value)
+  if (ids.length === 0 || deletingSelected.value) return
+
+  const confirmed = await confirmDanger(
+    legacyT(`确定删除选中的 ${ids.length} 个模型吗？\n\n此操作不可撤销。`),
+    legacyT('批量删除模型'),
+  )
+  if (!confirmed) return
+
+  deletingSelected.value = true
+  try {
+    const results = await Promise.allSettled(
+      ids.map(id => deleteModel(props.provider.id, id)),
+    )
+    const successCount = results.filter(result => result.status === 'fulfilled').length
+    const failedCount = results.length - successCount
+
+    if (successCount > 0) {
+      showSuccess(legacyT(`成功删除 ${successCount} 个模型`))
+    }
+    if (failedCount > 0) {
+      showError(legacyT(`${failedCount} 个模型删除失败`), legacyT('部分失败'))
+    }
+
+    selectedIds.value = new Set()
+    if (successCount > 0) {
+      emit('refresh')
+    }
+  } catch (err: unknown) {
+    showError(parseApiError(err, '批量删除失败'), '错误')
+  } finally {
+    deletingSelected.value = false
+  }
+}
+
 // 切换模型启用状态
 async function toggleModelActive(model: Model) {
   if (togglingModelId.value) return
@@ -756,6 +891,14 @@ watch(
     modelTestProviderKeys.value = []
     modelTestKeysLoadedProviderId.value = null
     selectedTestKeyIds.value = []
+    selectedIds.value = new Set()
+  },
+)
+
+watch(
+  () => models.value.map(model => model.id),
+  (ids) => {
+    pruneMissingSelection(new Set(ids))
   },
 )
 
diff --git a/frontend/src/features/providers/components/provider-tabs/__tests__/ModelsTab.batch-delete.spec.ts b/frontend/src/features/providers/components/provider-tabs/__tests__/ModelsTab.batch-delete.spec.ts
new file mode 100644
index 000000000..f23b83ac3
--- /dev/null
+++ b/frontend/src/features/providers/components/provider-tabs/__tests__/ModelsTab.batch-delete.spec.ts
@@ -0,0 +1,265 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { createApp, defineComponent, h, nextTick, reactive, type App } from 'vue'
+
+import ModelsTab from '../ModelsTab.vue'
+import { createI18n } from '@/i18n'
+import type { Model, ProviderWithEndpointsSummary } from '@/api/endpoints'
+
+const modelMocks = vi.hoisted(() => ({
+  deleteModel: vi.fn(),
+  updateModel: vi.fn(),
+}))
+
+const confirmMocks = vi.hoisted(() => ({
+  confirmDanger: vi.fn(),
+}))
+
+const toastMocks = vi.hoisted(() => ({
+  success: vi.fn(),
+  error: vi.fn(),
+}))
+
+vi.mock('@/api/endpoints/models', () => modelMocks)
+vi.mock('@/api/endpoints/keys', () => ({
+  getProviderKeys: vi.fn().mockResolvedValue([]),
+}))
+vi.mock('@/composables/useConfirm', () => ({
+  useConfirm: () => confirmMocks,
+}))
+vi.mock('@/composables/useToast', () => ({
+  useToast: () => toastMocks,
+}))
+vi.mock('@/composables/useClipboard', () => ({
+  useClipboard: () => ({ copyToClipboard: vi.fn() }),
+}))
+vi.mock('@/composables/useModelTest', () => ({
+  useModelTest: () => ({
+    testing: { value: false },
+    dialogOpen: { value: false },
+    testResult: { value: null },
+    testMode: { value: 'global' },
+    testTrace: { value: null },
+    requestId: { value: null },
+    resetState: vi.fn(),
+    startTest: vi.fn(),
+    stopPolling: vi.fn(),
+  }),
+}))
+vi.mock('../ModelTestDialog.vue', () => ({
+  default: defineComponent({
+    name: 'ModelTestDialogStub',
+    setup: () => () => null,
+  }),
+}))
+
+const mountedApps: Array<{ app: App, root: HTMLElement }> = []
+
+function createProvider(id = 'provider-1'): ProviderWithEndpointsSummary {
+  return {
+    id,
+    name: 'OpenAI Responses',
+    provider_type: 'custom',
+    provider_priority: 1,
+    keep_priority_on_conversion: false,
+    enable_format_conversion: false,
+    is_active: true,
+    total_endpoints: 1,
+    active_endpoints: 1,
+    total_keys: 1,
+    active_keys: 1,
+    total_models: 2,
+    active_models: 2,
+    global_model_ids: [],
+    avg_health_score: 1,
+    unhealthy_endpoints: 0,
+    api_formats: ['openai:chat'],
+    endpoint_health_details: [],
+    ops_configured: false,
+    created_at: '2026-01-01T00:00:00Z',
+    updated_at: '2026-01-01T00:00:00Z',
+  }
+}
+
+function createModel(overrides: Partial<Model> = {}): Model {
+  return {
+    id: 'model-1',
+    provider_id: 'provider-1',
+    global_model_id: 'gm-1',
+    provider_model_name: 'deepseek-v4-flash',
+    global_model_name: 'deepseek-v4-flash',
+    global_model_display_name: 'DeepSeek V4 Flash',
+    is_active: true,
+    is_available: true,
+    created_at: '2026-01-01T00:00:00Z',
+    updated_at: '2026-01-01T00:00:00Z',
+    ...overrides,
+  }
+}
+
+const sampleModels = [
+  createModel(),
+  createModel({
+    id: 'model-2',
+    provider_model_name: 'kimi-k3',
+    global_model_name: 'kimi-k3',
+    global_model_display_name: 'Kimi K3',
+  }),
+]
+
+async function settle() {
+  for (let index = 0; index < 5; index += 1) {
+    await Promise.resolve()
+    await nextTick()
+  }
+}
+
+function mountTab(options?: {
+  models?: Model[]
+  provider?: ProviderWithEndpointsSummary
+}) {
+  const root = document.createElement('div')
+  document.body.appendChild(root)
+  const state = reactive({
+    models: options?.models ?? sampleModels,
+    provider: options?.provider ?? createProvider(),
+  })
+  const onRefresh = vi.fn()
+  const onBatchAssign = vi.fn()
+  const app = createApp(defineComponent({
+    setup() {
+      return () => h(ModelsTab, {
+        provider: state.provider,
+        models: state.models,
+        endpoints: [],
+        onRefresh,
+        onBatchAssign,
+      })
+    },
+  }))
+  app.use(createI18n())
+  app.mount(root)
+  mountedApps.push({ app, root })
+  return { root, state, onRefresh }
+}
+
+beforeEach(() => {
+  class ResizeObserverStub {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+  }
+  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+  modelMocks.deleteModel.mockReset()
+  modelMocks.deleteModel.mockResolvedValue({ message: 'ok' })
+  modelMocks.updateModel.mockReset()
+  confirmMocks.confirmDanger.mockReset()
+  confirmMocks.confirmDanger.mockResolvedValue(true)
+  toastMocks.success.mockReset()
+  toastMocks.error.mockReset()
+})
+
+afterEach(() => {
+  for (const { app, root } of mountedApps.splice(0)) {
+    app.unmount()
+    root.remove()
+  }
+  vi.unstubAllGlobals()
+})
+
+describe('ModelsTab batch delete', () => {
+  it('keeps delete selected hidden until a model is checked', async () => {
+    const { root } = mountTab()
+    await settle()
+
+    expect(root.querySelector('[data-testid="models-tab-select-all"]')).toBeTruthy()
+    expect(root.querySelector('[data-testid="models-tab-row-checkbox-model-1"]')).toBeTruthy()
+    expect(root.querySelector('[data-testid="models-tab-row-checkbox-model-2"]')).toBeTruthy()
+    expect(root.querySelector('[data-testid="models-tab-delete-selected"]')).toBeNull()
+  })
+
+  it('selects all, shows a partial state, and deletes after confirmation', async () => {
+    const { root, onRefresh } = mountTab()
+    await settle()
+
+    const selectAll = root.querySelector('[data-testid="models-tab-select-all"]') as HTMLInputElement
+    selectAll.click()
+    await settle()
+
+    expect(selectAll.checked).toBe(true)
+    expect(selectAll.indeterminate).toBe(false)
+    expect((root.querySelector('[data-testid="models-tab-row-checkbox-model-1"]') as HTMLInputElement).checked).toBe(true)
+    expect((root.querySelector('[data-testid="models-tab-row-checkbox-model-2"]') as HTMLInputElement).checked).toBe(true)
+    expect(root.textContent).toContain('已选 2 个')
+
+    ;(root.querySelector('[data-testid="models-tab-row-checkbox-model-2"]') as HTMLInputElement).click()
+    await settle()
+
+    expect(selectAll.checked).toBe(false)
+    expect(selectAll.indeterminate).toBe(true)
+    expect(root.textContent).toContain('已选 1 个')
+
+    const deleteButton = root.querySelector('[data-testid="models-tab-delete-selected"]') as HTMLButtonElement
+    expect(deleteButton.textContent).toContain('删除选中')
+    deleteButton.click()
+    await settle()
+
+    expect(confirmMocks.confirmDanger).toHaveBeenCalledWith(
+      '确定删除选中的 1 个模型吗？\n\n此操作不可撤销。',
+      '批量删除模型',
+    )
+    expect(modelMocks.deleteModel).toHaveBeenCalledTimes(1)
+    expect(modelMocks.deleteModel).toHaveBeenCalledWith('provider-1', 'model-1')
+    expect(toastMocks.success).toHaveBeenCalledWith('成功删除 1 个模型')
+    expect(onRefresh).toHaveBeenCalledTimes(1)
+    expect(root.querySelector('[data-testid="models-tab-delete-selected"]')).toBeNull()
+    expect(selectAll.checked).toBe(false)
+    expect(selectAll.indeterminate).toBe(false)
+  })
+
+  it('does not delete when confirmation is cancelled', async () => {
+    confirmMocks.confirmDanger.mockResolvedValue(false)
+    const { root, onRefresh } = mountTab()
+    await settle()
+
+    ;(root.querySelector('[data-testid="models-tab-row-checkbox-model-1"]') as HTMLInputElement).click()
+    await settle()
+    ;(root.querySelector('[data-testid="models-tab-delete-selected"]') as HTMLButtonElement).click()
+    await settle()
+
+    expect(modelMocks.deleteModel).not.toHaveBeenCalled()
+    expect(onRefresh).not.toHaveBeenCalled()
+    expect(root.querySelector('[data-testid="models-tab-delete-selected"]')).toBeTruthy()
+  })
+
+  it('drops stale selection when the current provider list refreshes', async () => {
+    const { root, state } = mountTab()
+    await settle()
+
+    const selectAll = root.querySelector('[data-testid="models-tab-select-all"]') as HTMLInputElement
+    selectAll.click()
+    await settle()
+    expect(root.textContent).toContain('已选 2 个')
+
+    state.models = [sampleModels[1]]
+    await settle()
+
+    expect(root.textContent).toContain('已选 1 个')
+    expect(root.querySelector('[data-testid="models-tab-row-checkbox-model-1"]')).toBeNull()
+    expect((root.querySelector('[data-testid="models-tab-row-checkbox-model-2"]') as HTMLInputElement).checked).toBe(true)
+  })
+
+  it('clears selection when switching providers', async () => {
+    const { root, state } = mountTab()
+    await settle()
+
+    ;(root.querySelector('[data-testid="models-tab-select-all"]') as HTMLInputElement).click()
+    await settle()
+    expect(root.textContent).toContain('已选 2 个')
+
+    state.provider = createProvider('provider-2')
+    await settle()
+
+    expect(root.querySelector('[data-testid="models-tab-delete-selected"]')).toBeNull()
+    expect((root.querySelector('[data-testid="models-tab-select-all"]') as HTMLInputElement).checked).toBe(false)
+  })
+})
diff --git a/frontend/src/i18n/__tests__/translation-coverage.spec.ts b/frontend/src/i18n/__tests__/translation-coverage.spec.ts
index 6f684ab32..9b3547cab 100644
--- a/frontend/src/i18n/__tests__/translation-coverage.spec.ts
+++ b/frontend/src/i18n/__tests__/translation-coverage.spec.ts
@@ -50,6 +50,10 @@ describe('translation coverage', () => {
     ['1 维度', '1 dimension'],
     ['14天0时', '14d 0h'],
     ['5天 0:00:00', '5d 0:00:00'],
+    ['确定删除选中的 3 个模型吗？\n\n此操作不可撤销。', 'Delete the selected 3 models?\n\nThis cannot be undone.'],
+    ['确定删除选中的 1 个模型吗？\n\n此操作不可撤销。', 'Delete the selected 1 model?\n\nThis cannot be undone.'],
+    ['成功删除 2 个模型', 'Deleted 2 models'],
+    ['1 个模型删除失败', 'Failed to delete 1 model'],
   ])('translates %s as a complete message', (source, expected) => {
     expect(translateLegacyText(source, 'en-US')).toBe(expected)
   })
diff --git a/frontend/src/i18n/messages.ts b/frontend/src/i18n/messages.ts
index dd58b6316..2992c30b2 100644
--- a/frontend/src/i18n/messages.ts
+++ b/frontend/src/i18n/messages.ts
@@ -2981,6 +2981,9 @@ const legacyDynamicPatterns: Array<[RegExp, (match: RegExpMatchArray) => string]
   [/^(.+) 个用户$/u, match => `${match[1]} users`],
   [/^有 (.+) 条格式错误$/u, match => `${match[1]} format errors`],
   [/^还有 (.+) 条错误未显示$/u, match => `${match[1]} more errors hidden`],
+  [/^确定删除选中的 (\d+) 个模型吗？\n\n此操作不可撤销。$/u, match => `Delete the selected ${match[1]} ${match[1] === '1' ? 'model' : 'models'}?\n\nThis cannot be undone.`],
+  [/^成功删除 (\d+) 个模型$/u, match => `Deleted ${match[1]} ${match[1] === '1' ? 'model' : 'models'}`],
+  [/^(\d+) 个模型删除失败$/u, match => `Failed to delete ${match[1]} ${match[1] === '1' ? 'model' : 'models'}`],
   [/^确定删除套餐「(.+)」吗？\n\n已有订单或权益的套餐不能删除，请改为停用。删除后无法恢复。$/u, match => `Delete plan "${match[1]}"?\n\nPlans with existing orders or entitlements cannot be deleted. Disable it instead. This cannot be undone.`],
   [/^确定要删除映射 "(.+)" 吗？\n\n注意：这只会删除映射记录，不会删除 Google 上的实际文件。$/u, match => `Delete mapping "${match[1]}"?\n\nThis only deletes the mapping record and will not delete the actual file on Google.`],
   [/^确认删除批次「(.+)」吗？删除后无法恢复。$/u, match => `Delete batch "${match[1]}"? This cannot be undone.`],
diff --git a/frontend/src/mocks/handler.ts b/frontend/src/mocks/handler.ts
index 6f1be7de5..7c10c8136 100644
--- a/frontend/src/mocks/handler.ts
+++ b/frontend/src/mocks/handler.ts
@@ -2429,6 +2429,8 @@ function generateMockKeysForProvider(providerId: string, count: number = 2) {
   })
 }
 
+const deletedProviderModelIds = new Set<string>()
+
 // 为 provider 生成 models
 function generateMockModelsForProvider(providerId: string) {
   const provider = MOCK_PROVIDERS.find(p => p.id === providerId)
@@ -2607,7 +2609,7 @@ function generateMockModelsForProvider(providerId: string) {
     )
   }
 
-  return models
+  return models.filter(model => !deletedProviderModelIds.has(String(model.id)))
 }
 
 // ========== 注册动态路由 ==========
@@ -3355,9 +3357,10 @@ registerDynamicRoute('PATCH', '/api/admin/providers/:providerId/models/:modelId'
 })
 
 // 删除 Provider Model
-registerDynamicRoute('DELETE', '/api/admin/providers/:providerId/models/:modelId', async (_config, _params) => {
+registerDynamicRoute('DELETE', '/api/admin/providers/:providerId/models/:modelId', async (_config, params) => {
   await delay()
   requireAdmin()
+  deletedProviderModelIds.add(params.modelId)
   return createMockResponse({ message: '删除成功（演示模式）' })
 })