diff --git a/app/main/api/internal/service/apirequestService.go b/app/main/api/internal/service/apirequestService.go
index 8d84b8d..d854f78 100644
--- a/app/main/api/internal/service/apirequestService.go
+++ b/app/main/api/internal/service/apirequestService.go
@@ -24,6 +24,14 @@ func convertTianyuanResponse(resp *tianyuanapi.Response) ([]byte, error) {
 	return json.Marshal(resp.Data)
 }
 
+// 生成认证时间范围：当前时间前后两天的YYYYMMDD-YYMMDD格式
+func generateAuthDateRange() string {
+	now := time.Now()
+	start := now.AddDate(0, 0, -2).Format("20060102")
+	end := now.AddDate(0, 0, 2).Format("20060102")
+	return fmt.Sprintf("%s-%s", start, end)
+}
+
 type ApiRequestService struct {
 	config              config.Config
 	featureModel        model.FeatureModel
@@ -538,19 +546,12 @@ func (a *ApiRequestService) ProcesFLXG0V4BRequest(params []byte) ([]byte, error)
 		return nil, errors.New("api请求, BehaviorRiskScan, 获取相关参数失败")
 	}
 
-	authDate := func() string {
-		now := time.Now()
-		start := now.AddDate(0, 0, -2).Format("20060201")
-		end := now.AddDate(0, 0, 2).Format("20060201")
-		return fmt.Sprintf("%s-%s", start, end)
-	}
 	resp, err := a.tianyuanapi.CallInterface("FLXG0V4B", map[string]interface{}{
 		"name":      name.String(),
 		"id_card":   idCard.String(),
 		"mobile":    mobile.String(),
-		"auth_date": authDate(),
+		"auth_date": generateAuthDateRange(),
 	})
-
 	if err != nil {
 		return nil, err
 	}
@@ -1069,17 +1070,10 @@ func (a *ApiRequestService) ProcessFLXG0V4BRequest(params []byte) ([]byte, error
 		return nil, errors.New("api请求, FLXG0V4B, 获取相关参数失败")
 	}
 
-	authDate := func() string {
-		now := time.Now()
-		start := now.AddDate(0, 0, -2).Format("20060201")
-		end := now.AddDate(0, 0, 2).Format("20060201")
-		return fmt.Sprintf("%s-%s", start, end)
-	}
-
 	resp, err := a.tianyuanapi.CallInterface("FLXG0V4B", map[string]interface{}{
 		"name":      name.String(),
 		"id_card":   idCard.String(),
-		"auth_date": authDate(),
+		"auth_date": generateAuthDateRange(),
 	}, &tianyuanapi.ApiCallOptions{
 		Json: true,
 	})