diff --git a/frontend/src/components/account/AccountUsageCell.vue b/frontend/src/components/account/AccountUsageCell.vue
index cbd93df838..d064c55a41 100644
--- a/frontend/src/components/account/AccountUsageCell.vue
+++ b/frontend/src/components/account/AccountUsageCell.vue
@@ -96,7 +96,7 @@
     <!-- Antigravity OAuth accounts: show quota from extra field -->
     <template v-else-if="account.platform === 'antigravity' && account.type === 'oauth'">
       <!-- 账户类型徽章 -->
-      <div v-if="antigravityTierLabel" class="mb-1">
+      <div v-if="antigravityTierLabel" class="mb-1 flex items-center gap-1">
         <span
           :class="[
             'inline-block rounded px-1.5 py-0.5 text-[10px] font-medium',
@@ -105,6 +105,28 @@
         >
           {{ antigravityTierLabel }}
         </span>
+        <!-- 不合格账户警告图标 -->
+        <span
+          v-if="hasIneligibleTiers"
+          class="group relative cursor-help"
+        >
+          <svg
+            class="h-3.5 w-3.5 text-red-500"
+            fill="currentColor"
+            viewBox="0 0 20 20"
+          >
+            <path
+              fill-rule="evenodd"
+              d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z"
+              clip-rule="evenodd"
+            />
+          </svg>
+          <span
+            class="pointer-events-none absolute left-0 top-full z-50 mt-1 w-80 whitespace-normal break-words rounded bg-gray-900 px-3 py-2 text-xs leading-relaxed text-white opacity-0 shadow-lg transition-opacity group-hover:opacity-100 dark:bg-gray-700"
+          >
+            {{ t('admin.accounts.ineligibleWarning') }}
+          </span>
+        </span>
       </div>
 
       <div v-if="hasAntigravityQuota" class="space-y-1">
@@ -453,6 +475,18 @@ const antigravityTierClass = computed(() => {
   }
 })
 
+// 检测账户是否有不合格状态（ineligibleTiers）
+const hasIneligibleTiers = computed(() => {
+  const extra = props.account.extra as Record<string, unknown> | undefined
+  if (!extra) return false
+
+  const loadCodeAssist = extra.load_code_assist as Record<string, unknown> | undefined
+  if (!loadCodeAssist) return false
+
+  const ineligibleTiers = loadCodeAssist.ineligibleTiers as unknown[] | undefined
+  return Array.isArray(ineligibleTiers) && ineligibleTiers.length > 0
+})
+
 const loadUsage = async () => {
   // Fetch usage for Anthropic OAuth and Setup Token accounts
   // OpenAI usage comes from account.extra field (updated during forwarding)
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index ecc36eecf5..d153b553a6 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -1194,7 +1194,9 @@ export default {
         free: 'Free',
         pro: 'Pro',
         ultra: 'Ultra'
-      }
+      },
+      ineligibleWarning:
+        'This account is not eligible for Antigravity, but API forwarding still works. Use at your own risk.'
     },
 
     // Proxies
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index a137a59678..c6105683f7 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -994,6 +994,8 @@ export default {
         pro: 'Pro',
         ultra: 'Ultra'
       },
+      ineligibleWarning:
+        '该账号无 Antigravity 使用权限，但仍能进行 API 转发。继续使用请自行承担风险。',
       form: {
         nameLabel: '账号名称',
         namePlaceholder: '请输入账号名称',