diff --git a/internal/pkg/response/response.go b/internal/pkg/response/response.go
index 7be7275..1514fc3 100644
--- a/internal/pkg/response/response.go
+++ b/internal/pkg/response/response.go
@@ -155,8 +155,10 @@ func statusCodeFromAppErrorCode(code string) int {
 	case "NOT_FOUND", "USER_NOT_FOUND", "POST_NOT_FOUND", "GROUP_NOT_FOUND",
 		"GROUP_REQUEST_NOT_FOUND", "SCHEDULE_COURSE_NOT_FOUND":
 		return http.StatusNotFound
-	case "UNAUTHORIZED", "INVALID_CREDENTIALS":
+	case "UNAUTHORIZED":
 		return http.StatusUnauthorized
+	case "INVALID_CREDENTIALS":
+		return http.StatusBadRequest
 	case "FORBIDDEN", "NOT_GROUP_MEMBER", "NOT_GROUP_ADMIN", "NOT_GROUP_OWNER",
 		"USER_BANNED", "USER_BLOCKED", "MUTED", "MUTE_ALL_ENABLED",
 		"SCHEDULE_FORBIDDEN", "UNAUTHORIZED_NOTIFICATION":
@@ -183,8 +185,8 @@ func statusCodeFromAppErrorCode(code string) int {
 // ErrorWithStringCode 带字符串错误码的错误响应
 func ErrorWithStringCode(c *gin.Context, statusCode int, code string, message string) {
 	c.JSON(statusCode, ResponseSnakeCase{
-		Code:    0, // 为了兼容，这里设为0，实际错误码在message中体现
+		Code:    statusCode,
 		Message: message,
-		Data:    code,
+		Data:    nil,
 	})
 }