diff --git a/vehicle-data-platform/apps/api/internal/app/auth_store.go b/vehicle-data-platform/apps/api/internal/app/auth_store.go
index f7b44f98..baef7c01 100644
--- a/vehicle-data-platform/apps/api/internal/app/auth_store.go
+++ b/vehicle-data-platform/apps/api/internal/app/auth_store.go
@@ -41,20 +41,26 @@ var customerMenuSet = map[string]bool{
 var adminMenus = []string{"monitor", "vehicles", "tracks", "history", "statistics", "alerts", "access", "operations", "users"}
 
 type authUser struct {
-	ID              uint64     `json:"id"`
-	Username        string     `json:"username"`
-	DisplayName     string     `json:"displayName"`
-	UserType        string     `json:"userType"`
-	Status          string     `json:"status"`
-	CustomerRef     string     `json:"customerRef"`
-	TenantRef       string     `json:"tenantRef"`
-	AuthProvider    string     `json:"authProvider"`
-	ExternalSubject string     `json:"externalSubject,omitempty"`
-	MenuKeys        []string   `json:"menuKeys"`
-	VehicleVINs     []string   `json:"vehicleVins"`
-	LastLoginAt     *time.Time `json:"lastLoginAt,omitempty"`
-	CreatedAt       time.Time  `json:"createdAt"`
-	UpdatedAt       time.Time  `json:"updatedAt"`
+	ID              uint64             `json:"id"`
+	Username        string             `json:"username"`
+	DisplayName     string             `json:"displayName"`
+	UserType        string             `json:"userType"`
+	Status          string             `json:"status"`
+	CustomerRef     string             `json:"customerRef"`
+	TenantRef       string             `json:"tenantRef"`
+	AuthProvider    string             `json:"authProvider"`
+	ExternalSubject string             `json:"externalSubject,omitempty"`
+	MenuKeys        []string           `json:"menuKeys"`
+	VehicleVINs     []string           `json:"vehicleVins"`
+	Vehicles        []authVehicleGrant `json:"vehicles"`
+	LastLoginAt     *time.Time         `json:"lastLoginAt,omitempty"`
+	CreatedAt       time.Time          `json:"createdAt"`
+	UpdatedAt       time.Time          `json:"updatedAt"`
+}
+
+type authVehicleGrant struct {
+	VIN   string `json:"vin"`
+	Plate string `json:"plate"`
 }
 
 type localCredential struct {
@@ -385,6 +391,7 @@ func (s *authStore) listUsers(w http.ResponseWriter, r *http.Request) {
 	}
 	defer rows.Close()
 	users := []authUser{}
+	allVINs := []string{}
 	for rows.Next() {
 		var user authUser
 		var external sql.NullString
@@ -400,11 +407,75 @@ func (s *authStore) listUsers(w http.ResponseWriter, r *http.Request) {
 		}
 		user.MenuKeys = principal.MenuKeys
 		user.VehicleVINs = principal.VehicleVINs
+		allVINs = append(allVINs, principal.VehicleVINs...)
 		users = append(users, user)
 	}
+	if err := rows.Err(); err != nil {
+		httpx.WriteError(w, http.StatusInternalServerError, "USER_LIST_FAILED", "无法读取账号列表", "", requestTraceID(r))
+		return
+	}
+	vehicleLabels, err := loadAuthVehicleGrants(r.Context(), s.db, normalizeVINs(allVINs))
+	if err != nil {
+		httpx.WriteError(w, http.StatusInternalServerError, "USER_LIST_FAILED", "无法读取车辆权限信息", "", requestTraceID(r))
+		return
+	}
+	for index := range users {
+		users[index].Vehicles = make([]authVehicleGrant, 0, len(users[index].VehicleVINs))
+		for _, vin := range users[index].VehicleVINs {
+			vehicle := vehicleLabels[vin]
+			if vehicle.VIN == "" {
+				vehicle.VIN = vin
+			}
+			users[index].Vehicles = append(users[index].Vehicles, vehicle)
+		}
+	}
 	httpx.WriteOK(w, requestTraceID(r), users)
 }
 
+func loadAuthVehicleGrants(ctx context.Context, db *sql.DB, vins []string) (map[string]authVehicleGrant, error) {
+	result := make(map[string]authVehicleGrant, len(vins))
+	for start := 0; start < len(vins); start += 250 {
+		end := start + 250
+		if end > len(vins) {
+			end = len(vins)
+		}
+		part := vins[start:end]
+		placeholders := strings.TrimSuffix(strings.Repeat("?,", len(part)), ",")
+		args := make([]any, 0, len(part)*2)
+		for range 2 {
+			for _, vin := range part {
+				args = append(args, vin)
+			}
+		}
+		query := `SELECT vin, COALESCE(` +
+			`MAX(CASE WHEN source_priority=0 THEN NULLIF(plate,'') END),` +
+			`MAX(CASE WHEN source_priority=1 THEN NULLIF(plate,'') END),'') ` +
+			`FROM (` +
+			`SELECT UPPER(TRIM(vin)) AS vin,plate,0 AS source_priority FROM vehicle_identity_binding WHERE vin IN (` + placeholders + `) ` +
+			`UNION ALL ` +
+			`SELECT UPPER(TRIM(vin)) AS vin,plate,1 AS source_priority FROM vehicle_realtime_snapshot WHERE vin IN (` + placeholders + `)` +
+			`) vehicle_grants GROUP BY vin`
+		rows, err := db.QueryContext(ctx, query, args...)
+		if err != nil {
+			return nil, err
+		}
+		for rows.Next() {
+			var vehicle authVehicleGrant
+			if err := rows.Scan(&vehicle.VIN, &vehicle.Plate); err != nil {
+				rows.Close()
+				return nil, err
+			}
+			vehicle.VIN = strings.ToUpper(strings.TrimSpace(vehicle.VIN))
+			vehicle.Plate = strings.TrimSpace(vehicle.Plate)
+			result[vehicle.VIN] = vehicle
+		}
+		if err := rows.Close(); err != nil {
+			return nil, err
+		}
+	}
+	return result, nil
+}
+
 func (s *authStore) createCustomer(w http.ResponseWriter, r *http.Request, actor platform.Principal) {
 	var input userMutation
 	if !decodeAuthJSON(w, r, &input) {
diff --git a/vehicle-data-platform/apps/web/src/api/types.ts b/vehicle-data-platform/apps/web/src/api/types.ts
index e125c6d4..745e1e6a 100644
--- a/vehicle-data-platform/apps/web/src/api/types.ts
+++ b/vehicle-data-platform/apps/web/src/api/types.ts
@@ -36,11 +36,17 @@ export interface AdminUser {
   externalSubject?: string;
   menuKeys: string[];
   vehicleVins: string[];
+  vehicles: AdminVehicleGrant[];
   lastLoginAt?: string;
   createdAt: string;
   updatedAt: string;
 }
 
+export interface AdminVehicleGrant {
+  vin: string;
+  plate: string;
+}
+
 export interface CustomerUserInput {
   username?: string;
   displayName: string;
diff --git a/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.test.tsx b/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.test.tsx
new file mode 100644
index 00000000..3214aa64
--- /dev/null
+++ b/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.test.tsx
@@ -0,0 +1,53 @@
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react';
+import { afterEach, expect, test, vi } from 'vitest';
+import UsersPage from './UsersPage';
+
+const mocks = vi.hoisted(() => ({
+  adminUsers: vi.fn(),
+  vehicleCoverage: vi.fn(),
+  createCustomerUser: vi.fn(),
+  updateCustomerUser: vi.fn()
+}));
+
+vi.mock('../../api/client', () => ({ api: mocks }));
+
+afterEach(() => {
+  cleanup();
+  Object.values(mocks).forEach((mock) => mock.mockReset());
+});
+
+test('deduplicates vehicle candidates by VIN and renders granted vehicles plate first', async () => {
+  mocks.adminUsers.mockResolvedValue([{
+    id: 7,
+    username: 'customer-east',
+    displayName: '华东客户',
+    userType: 'customer',
+    status: 'enabled',
+    customerRef: '',
+    tenantRef: '',
+    authProvider: 'local',
+    menuKeys: ['monitor'],
+    vehicleVins: ['VIN001'],
+    vehicles: [{ vin: 'VIN001', plate: '粤A11111' }],
+    createdAt: '2026-07-16T00:00:00Z',
+    updatedAt: '2026-07-16T00:00:00Z'
+  }]);
+  const duplicatedVehicle = { vin: 'VIN002', plate: '粤A22222', protocols: ['GB32960', 'JT808'] };
+  mocks.vehicleCoverage.mockResolvedValue({ items: [duplicatedVehicle, duplicatedVehicle], total: 1, limit: 20, offset: 0 });
+  const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+
+  render(<QueryClientProvider client={client}><UsersPage /></QueryClientProvider>);
+
+  fireEvent.click(await screen.findByRole('button', { name: /华东客户/ }));
+  expect(await screen.findByRole('button', { name: '移除 粤A11111' })).toHaveTextContent('粤A11111VIN001');
+
+  fireEvent.change(screen.getByRole('textbox', { name: '按车牌或 VIN 搜索' }), { target: { value: '粤A22222' } });
+  await waitFor(() => expect(mocks.vehicleCoverage).toHaveBeenCalled());
+  const candidates = await screen.findAllByRole('button', { name: /粤A22222.*VIN002.*选择/ });
+  expect(candidates).toHaveLength(1);
+  expect((mocks.vehicleCoverage.mock.calls[0][0] as URLSearchParams).get('keyword')).toBe('粤A22222');
+
+  fireEvent.click(candidates[0]);
+  expect(await screen.findByRole('button', { name: '移除 粤A22222' })).toHaveTextContent('粤A22222VIN002');
+});
diff --git a/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.tsx b/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.tsx
index 73c3f407..f0fd6d8d 100644
--- a/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/pages/UsersPage.tsx
@@ -33,6 +33,17 @@ function formatTime(value?: string) {
   return new Date(value).toLocaleString('zh-CN', { hour12: false });
 }
 
+function uniqueVehicles<T extends { vin: string; plate: string }>(vehicles: T[]) {
+  const byVIN = new Map<string, T>();
+  for (const vehicle of vehicles) {
+    const vin = vehicle.vin.trim().toUpperCase();
+    const current = byVIN.get(vin);
+    if (!vin || (current?.plate && !vehicle.plate)) continue;
+    byVIN.set(vin, vehicle);
+  }
+  return [...byVIN.values()];
+}
+
 export default function UsersPage() {
   const queryClient = useQueryClient();
   const users = useQuery({ queryKey: ['admin-users'], queryFn: ({ signal }) => api.adminUsers(signal), staleTime: 10_000 });
@@ -44,19 +55,32 @@ export default function UsersPage() {
   const [vehicleKeyword, setVehicleKeyword] = useState('');
   const deferredVehicleKeyword = useDeferredValue(vehicleKeyword.trim());
   const [bulkVINs, setBulkVINs] = useState('');
+  const [vehicleLabels, setVehicleLabels] = useState<Record<string, string>>({});
   const [feedback, setFeedback] = useState('');
 
   useEffect(() => {
-    if (!creating && selected) setDraft(draftFromUser(selected));
+    if (!creating && selected) {
+      setDraft(draftFromUser(selected));
+      setVehicleLabels(Object.fromEntries(selected.vehicles.map((vehicle) => [vehicle.vin, vehicle.plate])));
+    }
   }, [creating, selected]);
 
   const candidates = useQuery({
     queryKey: ['permission-vehicle-candidates', deferredVehicleKeyword],
-    queryFn: ({ signal }) => api.vehicles(new URLSearchParams({ keyword: deferredVehicleKeyword, limit: '20', offset: '0' }), signal),
+    queryFn: ({ signal }) => api.vehicleCoverage(new URLSearchParams({ keyword: deferredVehicleKeyword, limit: '20', offset: '0' }), signal),
     enabled: deferredVehicleKeyword.length >= 1,
     staleTime: 30_000
   });
   const assigned = useMemo(() => new Set(draft.vehicleVins), [draft.vehicleVins]);
+  const candidateVehicles = useMemo(() => uniqueVehicles(candidates.data?.items ?? []), [candidates.data?.items]);
+  useEffect(() => {
+    if (candidateVehicles.length === 0) return;
+    setVehicleLabels((current) => {
+      const next = { ...current };
+      for (const vehicle of candidateVehicles) next[vehicle.vin] = vehicle.plate;
+      return next;
+    });
+  }, [candidateVehicles]);
 
   const save = useMutation({
     mutationFn: async () => {
@@ -81,6 +105,7 @@ export default function UsersPage() {
     setDraft(draftFromUser());
     setVehicleKeyword('');
     setBulkVINs('');
+    setVehicleLabels({});
     setFeedback('');
   };
   const selectCustomer = (user: AdminUser) => {
@@ -125,8 +150,8 @@ export default function UsersPage() {
           <section><h4>菜单权限 <small>只能分配客户开放菜单</small></h4><div className="v2-menu-permissions">{customerMenus.map((menu) => <label key={menu.key} className={draft.menuKeys.includes(menu.key) ? 'is-selected' : ''}><input type="checkbox" checked={draft.menuKeys.includes(menu.key)} onChange={() => setDraft((value) => ({ ...value, menuKeys: value.menuKeys.includes(menu.key) ? value.menuKeys.filter((item) => item !== menu.key) : [...value.menuKeys, menu.key] }))} /><span><b>{menu.label}</b><small>{menu.description}</small></span></label>)}</div></section>
           <section><div className="v2-vehicle-permission-heading"><h4>车辆权限 <small>已选择 {draft.vehicleVins.length} 辆</small></h4>{draft.vehicleVins.length ? <button type="button" onClick={() => setDraft((value) => ({ ...value, vehicleVins: [] }))}>清空</button> : null}</div>
             <div className="v2-vehicle-permission-tools"><label><span>按车牌或 VIN 搜索</span><input value={vehicleKeyword} onChange={(event) => setVehicleKeyword(event.target.value)} placeholder="输入后显示候选车辆" /></label><label><span>批量粘贴 VIN</span><span className="v2-bulk-vin"><input value={bulkVINs} onChange={(event) => setBulkVINs(event.target.value)} placeholder="空格、逗号或换行分隔" /><button type="button" disabled={!bulkVINs.trim()} onClick={addBulkVINs}>加入</button></span></label></div>
-            {deferredVehicleKeyword ? <div className="v2-vehicle-candidates">{candidates.isPending ? <p>正在搜索车辆…</p> : (candidates.data?.items ?? []).length === 0 ? <p>没有匹配车辆</p> : candidates.data?.items.map((vehicle) => <button type="button" className={assigned.has(vehicle.vin) ? 'is-selected' : ''} key={`${vehicle.vin}-${vehicle.protocol}`} onClick={() => toggleVIN(vehicle.vin)}><span><b>{vehicle.plate || '未登记车牌'}</b><small>{vehicle.vin}</small></span><i>{assigned.has(vehicle.vin) ? '已分配' : '选择'}</i></button>)}</div> : null}
-            {draft.vehicleVins.length ? <div className="v2-assigned-vins">{draft.vehicleVins.map((vin) => <button type="button" key={vin} onClick={() => toggleVIN(vin)}>{vin}<span>×</span></button>)}</div> : <p className="v2-user-empty">尚未分配车辆，客户将无法看到任何车辆数据。</p>}
+            {deferredVehicleKeyword ? <div className="v2-vehicle-candidates">{candidates.isPending ? <p>正在搜索车辆…</p> : candidateVehicles.length === 0 ? <p>没有匹配车辆</p> : candidateVehicles.map((vehicle) => <button type="button" className={assigned.has(vehicle.vin) ? 'is-selected' : ''} key={vehicle.vin} onClick={() => toggleVIN(vehicle.vin)}><span><b>{vehicle.plate || '未登记车牌'}</b><small>{vehicle.vin}</small></span><i>{assigned.has(vehicle.vin) ? '已分配' : '选择'}</i></button>)}</div> : null}
+            {draft.vehicleVins.length ? <div className="v2-assigned-vins">{draft.vehicleVins.map((vin) => { const plate = vehicleLabels[vin]; return <button type="button" key={vin} aria-label={`移除 ${plate || vin}`} onClick={() => toggleVIN(vin)}><span><b>{plate || '未登记车牌'}</b><small>{vin}</small></span><i>×</i></button>; })}</div> : <p className="v2-user-empty">尚未分配车辆，客户将无法看到任何车辆数据。</p>}
           </section>
           {feedback ? <p className={`v2-user-feedback${save.isError ? ' is-error' : ''}`} role="status">{feedback}</p> : null}
           <footer><button type="submit" disabled={save.isPending}>{save.isPending ? '正在保存…' : creating ? '创建账号' : '保存权限'}</button></footer>
diff --git a/vehicle-data-platform/apps/web/src/v2/styles/v2.css b/vehicle-data-platform/apps/web/src/v2/styles/v2.css
index 28e5bf06..2b7f540b 100644
--- a/vehicle-data-platform/apps/web/src/v2/styles/v2.css
+++ b/vehicle-data-platform/apps/web/src/v2/styles/v2.css
@@ -1423,7 +1423,7 @@ button, a { -webkit-tap-highlight-color: transparent; }
 .v2-vehicle-candidates > p { grid-column: 1/-1; margin: 16px; color: #8996a7; font-size: 10px; }
 .v2-vehicle-candidates > button { display: flex; min-width: 0; align-items: center; justify-content: space-between; gap: 8px; border: 0; border-radius: 6px; background: transparent; padding: 8px; text-align: left; cursor: pointer; }.v2-vehicle-candidates > button:hover { background: #f4f7fa; }.v2-vehicle-candidates > button.is-selected { background: #edf4ff; }
 .v2-vehicle-candidates b, .v2-vehicle-candidates small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }.v2-vehicle-candidates b { color: #34455c; font-size: 10px; }.v2-vehicle-candidates small { margin-top: 3px; color: #8a96a6; font-size: 8px; }.v2-vehicle-candidates i { color: var(--v2-blue); font-size: 9px; font-style: normal; }
-.v2-assigned-vins { display: flex; max-height: 118px; flex-wrap: wrap; gap: 6px; overflow: auto; margin-top: 10px; }.v2-assigned-vins button { height: 26px; border: 1px solid #dbe4ef; border-radius: 6px; background: #f7f9fc; padding: 0 7px; color: #52637a; cursor: pointer; font: 9px ui-monospace, SFMono-Regular, Menlo, monospace; }.v2-assigned-vins button span { margin-left: 6px; color: #99a4b3; }
+.v2-assigned-vins { display: grid; max-height: 150px; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; overflow: auto; margin-top: 10px; }.v2-assigned-vins button { display: flex; min-width: 0; min-height: 42px; align-items: center; justify-content: space-between; gap: 8px; border: 1px solid #dbe4ef; border-radius: 7px; background: #f7f9fc; padding: 6px 8px; color: #52637a; text-align: left; cursor: pointer; }.v2-assigned-vins button > span { min-width: 0; }.v2-assigned-vins b,.v2-assigned-vins small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }.v2-assigned-vins b { color: #34455c; font-size: 10px; }.v2-assigned-vins small { margin-top: 3px; color: #8a96a6; font: 8px ui-monospace,SFMono-Regular,Menlo,monospace; }.v2-assigned-vins i { flex: 0 0 auto; color: #99a4b3; font-size: 13px; font-style: normal; }
 .v2-user-empty { margin: 14px 4px; color: #8b97a7; font-size: 10px; line-height: 1.6; }
 .v2-user-feedback { margin: 14px 0 0; color: #16805b; font-size: 11px; }.v2-user-feedback.is-error { color: var(--v2-red); }
 .v2-user-editor form > footer { display: flex; justify-content: flex-end; margin-top: 18px; }.v2-user-editor form > footer button:disabled { opacity: .5; }
@@ -1443,7 +1443,7 @@ button, a { -webkit-tap-highlight-color: transparent; }
   .v2-user-admin-heading { align-items: flex-start; margin-bottom: 10px; }.v2-user-admin-heading h2 { font-size: 17px; }.v2-user-admin-heading p { display: none; }.v2-user-admin-heading > button { height: 34px; flex: 0 0 auto; padding: 0 10px; font-size: 10px; }
   .v2-user-admin-grid { display: flex; min-height: 0; overflow: visible; border: 0; box-shadow: none; flex-direction: column; gap: 8px; background: transparent; }
   .v2-user-list { display: flex; border: 1px solid var(--v2-border); border-radius: 10px; overflow-x: auto; padding: 6px; background: #fff; }.v2-user-list-summary { flex: 0 0 auto; padding: 8px; }.v2-user-list > button { min-width: 210px; }
-  .v2-user-editor { border: 1px solid var(--v2-border); border-radius: 10px; overflow: hidden; background: #fff; }.v2-user-editor form { padding: 16px 14px 22px; }.v2-user-fields, .v2-menu-permissions, .v2-vehicle-permission-tools, .v2-vehicle-candidates { grid-template-columns: 1fr; }
+  .v2-user-editor { border: 1px solid var(--v2-border); border-radius: 10px; overflow: hidden; background: #fff; }.v2-user-editor form { padding: 16px 14px 22px; }.v2-user-fields, .v2-menu-permissions, .v2-vehicle-permission-tools, .v2-vehicle-candidates, .v2-assigned-vins { grid-template-columns: 1fr; }
   .v2-password-mobile { display: grid !important; }
   .v2-topbar-actions .v2-current-user { display: none; }
 }