diff --git a/internal/admin/deps.go b/internal/admin/deps.go
index e92c37b..7debcf0 100644
--- a/internal/admin/deps.go
+++ b/internal/admin/deps.go
@@ -16,6 +16,7 @@ type ConfigStore interface {
 	Accounts() []config.Account
 	FindAccount(identifier string) (config.Account, bool)
 	UpdateAccountToken(identifier, token string) error
+	UpdateAccountTestStatus(identifier, status string) error
 	Update(mutator func(*config.Config) error) error
 	ExportJSONAndBase64() (string, string, error)
 	IsEnvBacked() bool
diff --git a/internal/admin/handler_accounts_crud.go b/internal/admin/handler_accounts_crud.go
index daaa434..a0d64df 100644
--- a/internal/admin/handler_accounts_crud.go
+++ b/internal/admin/handler_accounts_crud.go
@@ -56,6 +56,7 @@ func (h *Handler) listAccounts(w http.ResponseWriter, r *http.Request) {
 			"has_password":  acc.Password != "",
 			"has_token":     token != "",
 			"token_preview": preview,
+			"test_status":   acc.TestStatus,
 		})
 	}
 	writeJSON(w, http.StatusOK, map[string]any{"items": items, "total": total, "page": page, "page_size": pageSize, "total_pages": totalPages})
diff --git a/internal/admin/handler_accounts_testing.go b/internal/admin/handler_accounts_testing.go
index 2bd7706..7a7430d 100644
--- a/internal/admin/handler_accounts_testing.go
+++ b/internal/admin/handler_accounts_testing.go
@@ -88,7 +88,15 @@ func runAccountTestsConcurrently(accounts []config.Account, maxConcurrency int,
 
 func (h *Handler) testAccount(ctx context.Context, acc config.Account, model, message string) map[string]any {
 	start := time.Now()
-	result := map[string]any{"account": acc.Identifier(), "success": false, "response_time": 0, "message": "", "model": model}
+	identifier := acc.Identifier()
+	result := map[string]any{"account": identifier, "success": false, "response_time": 0, "message": "", "model": model}
+	defer func() {
+		status := "failed"
+		if ok, _ := result["success"].(bool); ok {
+			status = "ok"
+		}
+		_ = h.Store.UpdateAccountTestStatus(identifier, status)
+	}()
 	token := strings.TrimSpace(acc.Token)
 	if token == "" {
 		newToken, err := h.DS.Login(ctx, acc)
diff --git a/internal/config/config.go b/internal/config/config.go
index 4b281a2..b8d59d6 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -18,10 +18,11 @@ type Config struct {
 }
 
 type Account struct {
-	Email    string `json:"email,omitempty"`
-	Mobile   string `json:"mobile,omitempty"`
-	Password string `json:"password,omitempty"`
-	Token    string `json:"token,omitempty"`
+	Email      string `json:"email,omitempty"`
+	Mobile     string `json:"mobile,omitempty"`
+	Password   string `json:"password,omitempty"`
+	Token      string `json:"token,omitempty"`
+	TestStatus string `json:"test_status,omitempty"`
 }
 
 type CompatConfig struct {
diff --git a/internal/config/store.go b/internal/config/store.go
index 2e6fcaf..7a09cdc 100644
--- a/internal/config/store.go
+++ b/internal/config/store.go
@@ -97,6 +97,18 @@ func (s *Store) FindAccount(identifier string) (Account, bool) {
 	return Account{}, false
 }
 
+func (s *Store) UpdateAccountTestStatus(identifier, status string) error {
+	identifier = strings.TrimSpace(identifier)
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	idx, ok := s.findAccountIndexLocked(identifier)
+	if !ok {
+		return errors.New("account not found")
+	}
+	s.cfg.Accounts[idx].TestStatus = status
+	return s.saveLocked()
+}
+
 func (s *Store) UpdateAccountToken(identifier, token string) error {
 	identifier = strings.TrimSpace(identifier)
 	s.mu.Lock()
diff --git a/webui/src/features/account/AccountManagerContainer.jsx b/webui/src/features/account/AccountManagerContainer.jsx
index f5f9324..558739d 100644
--- a/webui/src/features/account/AccountManagerContainer.jsx
+++ b/webui/src/features/account/AccountManagerContainer.jsx
@@ -17,10 +17,12 @@ export default function AccountManagerContainer({ config, onRefresh, onMessage,
         setKeysExpanded,
         accounts,
         page,
+        pageSize,
         totalPages,
         totalAccounts,
         loadingAccounts,
         fetchAccounts,
+        changePageSize,
         resolveAccountIdentifier,
     } = useAccountsData({ apiFetch })
 
@@ -79,6 +81,7 @@ export default function AccountManagerContainer({ config, onRefresh, onMessage,
                 batchProgress={batchProgress}
                 totalAccounts={totalAccounts}
                 page={page}
+                pageSize={pageSize}
                 totalPages={totalPages}
                 resolveAccountIdentifier={resolveAccountIdentifier}
                 onTestAll={testAllAccounts}
@@ -87,6 +90,7 @@ export default function AccountManagerContainer({ config, onRefresh, onMessage,
                 onDeleteAccount={deleteAccount}
                 onPrevPage={() => fetchAccounts(page - 1)}
                 onNextPage={() => fetchAccounts(page + 1)}
+                onPageSizeChange={changePageSize}
             />
 
             <AddKeyModal
diff --git a/webui/src/features/account/AccountsTable.jsx b/webui/src/features/account/AccountsTable.jsx
index 63dfc5b..7f7c960 100644
--- a/webui/src/features/account/AccountsTable.jsx
+++ b/webui/src/features/account/AccountsTable.jsx
@@ -1,4 +1,5 @@
-import { ChevronLeft, ChevronRight, Play, Plus, Trash2 } from 'lucide-react'
+import { useState } from 'react'
+import { ChevronLeft, ChevronRight, Check, Copy, Play, Plus, Trash2 } from 'lucide-react'
 import clsx from 'clsx'
 
 export default function AccountsTable({
@@ -10,6 +11,7 @@ export default function AccountsTable({
     batchProgress,
     totalAccounts,
     page,
+    pageSize,
     totalPages,
     resolveAccountIdentifier,
     onTestAll,
@@ -18,7 +20,16 @@ export default function AccountsTable({
     onDeleteAccount,
     onPrevPage,
     onNextPage,
+    onPageSizeChange,
 }) {
+    const [copiedId, setCopiedId] = useState(null)
+
+    const copyId = (id) => {
+        navigator.clipboard.writeText(id).then(() => {
+            setCopiedId(id)
+            setTimeout(() => setCopiedId(null), 1500)
+        })
+    }
     return (
         <div className="bg-card border border-border rounded-xl overflow-hidden shadow-sm">
             <div className="p-6 border-b border-border flex flex-col md:flex-row md:items-center justify-between gap-4">
@@ -83,12 +94,23 @@ export default function AccountsTable({
                                 <div className="flex items-center gap-3 min-w-0">
                                     <div className={clsx(
                                         "w-2 h-2 rounded-full shrink-0",
-                                        acc.has_token ? "bg-emerald-500 shadow-[0_0_8px_rgba(16,185,129,0.5)]" : "bg-amber-500"
+                                        acc.test_status === 'failed' ? "bg-red-500 shadow-[0_0_8px_rgba(239,68,68,0.5)]" :
+                                        (acc.test_status === 'ok' || acc.has_token) ? "bg-emerald-500 shadow-[0_0_8px_rgba(16,185,129,0.5)]" :
+                                        "bg-amber-500"
                                     )} />
                                     <div className="min-w-0">
-                                        <div className="font-medium truncate">{id || '-'}</div>
+                                        <div
+                                            className="font-medium truncate flex items-center gap-1.5 cursor-pointer hover:text-primary transition-colors group"
+                                            onClick={() => copyId(id)}
+                                        >
+                                            <span className="truncate">{id || '-'}</span>
+                                            {copiedId === id
+                                                ? <Check className="w-3 h-3 text-emerald-500 shrink-0" />
+                                                : <Copy className="w-3 h-3 opacity-0 group-hover:opacity-50 shrink-0 transition-opacity" />
+                                            }
+                                        </div>
                                         <div className="flex items-center gap-2 text-xs text-muted-foreground mt-0.5">
-                                            <span>{acc.has_token ? t('accountManager.sessionActive') : t('accountManager.reauthRequired')}</span>
+                                            <span>{acc.test_status === 'failed' ? t('accountManager.testStatusFailed') : (acc.test_status === 'ok' || acc.has_token) ? t('accountManager.sessionActive') : t('accountManager.reauthRequired')}</span>
                                             {acc.token_preview && (
                                                 <span className="font-mono bg-muted px-1.5 py-0.5 rounded text-[10px]">
                                                     {acc.token_preview}
@@ -122,8 +144,19 @@ export default function AccountsTable({
 
             {totalPages > 1 && (
                 <div className="p-4 border-t border-border flex items-center justify-between">
-                    <div className="text-sm text-muted-foreground">
-                        {t('accountManager.pageInfo', { current: page, total: totalPages, count: totalAccounts })}
+                    <div className="flex items-center gap-3">
+                        <div className="text-sm text-muted-foreground">
+                            {t('accountManager.pageInfo', { current: page, total: totalPages, count: totalAccounts })}
+                        </div>
+                        <select
+                            value={pageSize}
+                            onChange={e => onPageSizeChange(Number(e.target.value))}
+                            className="text-sm border border-border rounded-md px-2 py-1 bg-background text-foreground"
+                        >
+                            {[10, 20, 50, 100, 500, 1000, 2000, 5000].map(s => (
+                                <option key={s} value={s}>{s}</option>
+                            ))}
+                        </select>
                     </div>
                     <div className="flex items-center gap-2">
                         <button
diff --git a/webui/src/features/account/useAccountsData.js b/webui/src/features/account/useAccountsData.js
index b0d9e64..90c56e0 100644
--- a/webui/src/features/account/useAccountsData.js
+++ b/webui/src/features/account/useAccountsData.js
@@ -6,7 +6,7 @@ export function useAccountsData({ apiFetch }) {
 
     const [accounts, setAccounts] = useState([])
     const [page, setPage] = useState(1)
-    const [pageSize] = useState(10)
+    const [pageSize, setPageSize] = useState(10)
     const [totalPages, setTotalPages] = useState(1)
     const [totalAccounts, setTotalAccounts] = useState(0)
     const [loadingAccounts, setLoadingAccounts] = useState(false)
@@ -16,10 +16,10 @@ export function useAccountsData({ apiFetch }) {
         return String(acc.identifier || acc.email || acc.mobile || '').trim()
     }
 
-    const fetchAccounts = async (targetPage = page) => {
+    const fetchAccounts = async (targetPage = page, targetPageSize = pageSize) => {
         setLoadingAccounts(true)
         try {
-            const res = await apiFetch(`/admin/accounts?page=${targetPage}&page_size=${pageSize}`)
+            const res = await apiFetch(`/admin/accounts?page=${targetPage}&page_size=${targetPageSize}`)
             if (res.ok) {
                 const data = await res.json()
                 setAccounts(data.items || [])
@@ -34,6 +34,11 @@ export function useAccountsData({ apiFetch }) {
         }
     }
 
+    const changePageSize = (newSize) => {
+        setPageSize(newSize)
+        fetchAccounts(1, newSize)
+    }
+
     const fetchQueueStatus = async () => {
         try {
             const res = await apiFetch('/admin/queue/status')
@@ -59,10 +64,12 @@ export function useAccountsData({ apiFetch }) {
         setKeysExpanded,
         accounts,
         page,
+        pageSize,
         totalPages,
         totalAccounts,
         loadingAccounts,
         fetchAccounts,
+        changePageSize,
         resolveAccountIdentifier,
     }
 }
diff --git a/webui/src/locales/en.json b/webui/src/locales/en.json
index c06a86d..bd38fd0 100644
--- a/webui/src/locales/en.json
+++ b/webui/src/locales/en.json
@@ -113,6 +113,7 @@
         "testingAllAccounts": "Testing all accounts...",
         "sessionActive": "Session active",
         "reauthRequired": "Re-auth required",
+        "testStatusFailed": "Last test failed",
         "noAccounts": "No accounts found.",
         "modalAddKeyTitle": "Add API key",
         "newKeyLabel": "New key value",
diff --git a/webui/src/locales/zh.json b/webui/src/locales/zh.json
index 7d587d7..1206f89 100644
--- a/webui/src/locales/zh.json
+++ b/webui/src/locales/zh.json
@@ -113,6 +113,7 @@
         "testingAllAccounts": "正在测试所有账号...",
         "sessionActive": "已建立会话",
         "reauthRequired": "需重新登录",
+        "testStatusFailed": "上次测试失败",
         "noAccounts": "未找到任何账号",
         "modalAddKeyTitle": "添加 API 密钥",
         "newKeyLabel": "新密钥值",