diff --git a/response/response.go b/response/response.go
index afcd864..4187630 100644
--- a/response/response.go
+++ b/response/response.go
@@ -38,7 +38,7 @@ func Send(ctx *gin.Context, code interface{}, httpCode int, data interface{}) {
 		define.ResponseTraceIDField:   ctx.GetString(define.TraceIDField),
 		define.ResponseRequestIDField: ctx.GetString(define.RequestIDField),
 		define.ResponseDataField:      data,
-		define.HandleRequestCostField: (time.Now().UnixNano() - ctx.GetInt64(define.StartRequestTimeField)) / 1e9,
+		define.HandleRequestCostField: float64(time.Now().UnixNano()-ctx.GetInt64(define.StartRequestTimeField)) / 1e9,
 	}
 	responseException := exception.New(code, httpCode, responseData)
 	ctx.JSON(responseException.GetHttpCode(), responseException.GetData())