diff --git a/backend/internal/handler/admin/admin_service_stub_test.go b/backend/internal/handler/admin/admin_service_stub_test.go
index d4fdd620..4c78ead8 100644
--- a/backend/internal/handler/admin/admin_service_stub_test.go
+++ b/backend/internal/handler/admin/admin_service_stub_test.go
@@ -261,11 +261,6 @@ func (s *stubAdminService) DeleteAccount(ctx context.Context, id int64) error {
 	return nil
 }
 
-func (s *stubAdminService) RefreshAccountCredentials(ctx context.Context, id int64) (*service.Account, error) {
-	account := service.Account{ID: id, Name: "account", Status: service.StatusActive}
-	return &account, nil
-}
-
 func (s *stubAdminService) ClearAccountError(ctx context.Context, id int64) (*service.Account, error) {
 	account := service.Account{ID: id, Name: "account", Status: service.StatusActive}
 	return &account, nil
diff --git a/backend/internal/service/admin_service.go b/backend/internal/service/admin_service.go
index b3fb4fde..7de76035 100644
--- a/backend/internal/service/admin_service.go
+++ b/backend/internal/service/admin_service.go
@@ -60,7 +60,6 @@ type AdminService interface {
 	CreateAccount(ctx context.Context, input *CreateAccountInput) (*Account, error)
 	UpdateAccount(ctx context.Context, id int64, input *UpdateAccountInput) (*Account, error)
 	DeleteAccount(ctx context.Context, id int64) error
-	RefreshAccountCredentials(ctx context.Context, id int64) (*Account, error)
 	ClearAccountError(ctx context.Context, id int64) (*Account, error)
 	SetAccountError(ctx context.Context, id int64, errorMsg string) error
 	// EnsureOpenAIPrivacy 检查 OpenAI OAuth 账号 privacy_mode，未设置则尝试关闭训练数据共享并持久化。
@@ -1847,15 +1846,6 @@ func (s *adminServiceImpl) DeleteAccount(ctx context.Context, id int64) error {
 	return nil
 }
 
-func (s *adminServiceImpl) RefreshAccountCredentials(ctx context.Context, id int64) (*Account, error) {
-	account, err := s.accountRepo.GetByID(ctx, id)
-	if err != nil {
-		return nil, err
-	}
-	// TODO: Implement refresh logic
-	return account, nil
-}
-
 func (s *adminServiceImpl) ClearAccountError(ctx context.Context, id int64) (*Account, error) {
 	if err := s.accountRepo.ClearError(ctx, id); err != nil {
 		return nil, err