diff --git a/controllers/user_controller.go b/controllers/user_controller.go
index e0f1c97..6357c63 100644
--- a/controllers/user_controller.go
+++ b/controllers/user_controller.go
@@ -12,8 +12,23 @@ import (
 
 //刷新验证码 POST
 func RefreshCode(c *gin.Context) {
+	var (
+		err  error
+		user = &struct {
+			Width  int `json:"width" form:"width" binding:"required"`
+			Height int `json:"height" form:"height" binding:"required"`
+		}{}
+	)
+	if err = c.ShouldBind(&user); err != nil {
+		c.JSON(http.StatusOK, &CallBack{
+			Code: model.ErrCodeNormal,
+			Desc: err.Error(),
+		})
+		globals.SugarLogger.Debugf("End API :%s error:%v:", c.Request.URL, err)
+		return
+	}
 	globals.SugarLogger.Debugf("RefreshCode, ip: %v", c.ClientIP())
-	utils.Captcha(c, 4)
+	utils.Captcha(c, user.Width, user.Height, 4)
 }
 
 type UserParam struct {
diff --git a/utils/utils.go b/utils/utils.go
index ae6aae7..d2da471 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -51,9 +51,8 @@ func RandStringBytesWithNumber(n int) string {
 	return string(b)
 }
 
-func Captcha(c *gin.Context, length ...int) {
+func Captcha(c *gin.Context, w, h int, length ...int) {
 	l := captcha.DefaultLen
-	w, h := 107, 36
 	if len(length) == 1 {
 		l = length[0]
 	}