diff --git a/frontend/src/views/Materials.test.js b/frontend/src/views/Materials.test.js
index 581f0344..70287966 100644
--- a/frontend/src/views/Materials.test.js
+++ b/frontend/src/views/Materials.test.js
@@ -26,6 +26,17 @@ vi.mock('../stores/auth', () => ({ useAuthStore: () => ({ isAdmin: true }) }))
 vi.mock('../composables/useOrganizationSwitchGuard', () => ({
   useOrganizationSwitchGuard: vi.fn()
 }))
+
+// 图片上传等直接写请求走 useSavingGuard 的保存互斥；这里替身掉，避免测试环境需要 active Pinia。
+const savingGuard = vi.hoisted(() => ({ runWithSaving: vi.fn(task => task()) }))
+vi.mock('../composables/useSavingGuard', () => ({
+  useSavingGuard: () => savingGuard
+}))
+
+beforeEach(() => {
+  // restoreAllMocks 会清掉 vi.fn 的实现，这里每个用例重新装上直通实现。
+  savingGuard.runWithSaving = vi.fn(task => task())
+})
 vi.mock('../api/masterData', () => ({
   materialCategoriesApi: { list: vi.fn() },
   unitsApi: { list: vi.fn() },
@@ -556,3 +567,43 @@ describe('物料页无可用分类时的配置入口提示', () => {
     wrapper.unmount()
   })
 })
+
+describe('物料图片上传的保存互斥', () => {
+  beforeEach(() => {
+    materialCategoriesApi.list.mockResolvedValue({ data: categories })
+    unitsApi.list.mockResolvedValue({ data: [] })
+    codeRulesApi.next.mockReset()
+    codeRulesApi.next.mockResolvedValue({ data: { available: true, code: 'A010201' } })
+    materialsStore.createMaterial.mockReset().mockResolvedValue({ data: {} })
+    vi.spyOn(ElMessage, 'success').mockImplementation(() => {})
+  })
+
+  // 上传绕开 axios、直接 fetch，是保存物料流程里的直接写请求。必须走保存互斥，
+  // 否则上传飞行期间组织 store 的 saving 仍为 false，能切公司，归属不明确。
+  test('带图片保存时，上传请求走保存互斥', async () => {
+    const wrapper = mountMaterials()
+    await flushPromises()
+    await openAddDialog(wrapper)
+    await pickCategories(wrapper)
+    setupState(wrapper).form.name = '带图物料'
+    setupState(wrapper).imageInput = { files: [new File(['x'], 'a.png', { type: 'image/png' })] }
+
+    const originalFetch = global.fetch
+    const fetchSpy = vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ data: { url: '/uploads/a.png' } })
+    })
+    global.fetch = fetchSpy
+
+    try {
+      await setupState(wrapper).handleSave()
+    } finally {
+      global.fetch = originalFetch
+    }
+
+    expect(fetchSpy).toHaveBeenCalled()
+    expect(materialsStore.createMaterial).toHaveBeenCalled()
+    expect(savingGuard.runWithSaving).toHaveBeenCalledTimes(1)
+    wrapper.unmount()
+  })
+})
diff --git a/frontend/src/views/Materials.vue b/frontend/src/views/Materials.vue
index af17e1aa..bdacf5b3 100644
--- a/frontend/src/views/Materials.vue
+++ b/frontend/src/views/Materials.vue
@@ -171,6 +171,7 @@ import { computed, ref, reactive, onMounted } from 'vue'
 import { useMaterialsStore } from '../stores/materials'
 import { useAuthStore } from '../stores/auth'
 import { useOrganizationSwitchGuard } from '../composables/useOrganizationSwitchGuard'
+import { useSavingGuard } from '../composables/useSavingGuard'
 import BaseTable from '../components/business/BaseTable.vue'
 import DeleteConfirm from '../components/business/DeleteConfirm.vue'
 import AlertTip from '../components/business/AlertTip.vue'
@@ -194,6 +195,9 @@ const MATERIAL_DATE_OPTIONS = {
 
 const materialsStore = useMaterialsStore()
 const authStore = useAuthStore()
+// 图片上传是本页唯一直接发起的写请求（其余写请求都走 materialsStore 自身的保存互斥）；
+// 上传要用保存互斥包住，飞行期间禁止切换公司。
+const { runWithSaving } = useSavingGuard()
 
 const searchKeyword = ref('')
 const materialSearchText = ref('')
@@ -421,14 +425,16 @@ async function handleSave() {
       uploadForm.append('image', file)
       // 这里绕开了 axios 拦截器，组织头得手工补上，否则图片上传会缺少 X-Organization-ID。
       const organizationId = getOrganizationId()
-      const res = await fetch('/api/upload', {
+      // 上传是保存物料流程中的直接写请求：包进保存互斥，飞行期间禁止切换公司；
+      // runWithSaving 内部是 try/finally，上传失败也会复位，不会把 busy 永久卡住。
+      const res = await runWithSaving(() => fetch('/api/upload', {
         method: 'POST',
         headers: {
           'Authorization': `Bearer ${authStore.token}`,
           ...(organizationId ? { 'X-Organization-ID': String(organizationId) } : {})
         },
         body: uploadForm
-      })
+      }))
       if (!res.ok) {
         ElMessage.error('图片上传失败')
         return