diff --git a/backend/internal/service/ratelimit_service.go b/backend/internal/service/ratelimit_service.go
index 2d75dd5a..41bd253c 100644
--- a/backend/internal/service/ratelimit_service.go
+++ b/backend/internal/service/ratelimit_service.go
@@ -73,10 +73,14 @@ func (s *RateLimitService) HandleUpstreamError(ctx context.Context, account *Acc
 		return false
 	}
 
-	tempMatched := false
+	// 先尝试临时不可调度规则（401除外）
+	// 如果匹配成功，直接返回，不执行后续禁用逻辑
 	if statusCode != 401 {
-		tempMatched = s.tryTempUnschedulable(ctx, account, statusCode, responseBody)
+		if s.tryTempUnschedulable(ctx, account, statusCode, responseBody) {
+			return true
+		}
 	}
+
 	upstreamMsg := strings.TrimSpace(extractUpstreamErrorMessage(responseBody))
 	upstreamMsg = sanitizeUpstreamErrorMessage(upstreamMsg)
 	if upstreamMsg != "" {
@@ -84,6 +88,14 @@ func (s *RateLimitService) HandleUpstreamError(ctx context.Context, account *Acc
 	}
 
 	switch statusCode {
+	case 400:
+		// 只有当错误信息包含 "organization has been disabled" 时才禁用
+		if strings.Contains(strings.ToLower(upstreamMsg), "organization has been disabled") {
+			msg := "Organization disabled (400): " + upstreamMsg
+			s.handleAuthError(ctx, account, msg)
+			shouldDisable = true
+		}
+		// 其他 400 错误（如参数问题）不处理，不禁用账号
 	case 401:
 		// 对所有 OAuth 账号在 401 错误时调用缓存失效并强制下次刷新
 		if account.Type == AccountTypeOAuth {
@@ -148,9 +160,6 @@ func (s *RateLimitService) HandleUpstreamError(ctx context.Context, account *Acc
 		}
 	}
 
-	if tempMatched {
-		return true
-	}
 	return shouldDisable
 }