diff --git a/api/service/User.go b/api/service/User.go
index 54f6903..fd9ce74 100644
--- a/api/service/User.go
+++ b/api/service/User.go
@@ -377,14 +377,15 @@ func (r *UserService) GetAppUserInfo(tx *gorm.DB, user *model.User, userInfo *mo
 	}
 
 	// 姓名
-	if appUserInfo.Data.Name != "" {
-		if user.UserName != "" {
-			if appUserInfo.Data.Name != user.UserName {
-				userData["user_name"] = appUserInfo.Data.Name
-			}
-		} else {
+	if appUserInfo.Data.Name == "" {
+		appUserInfo.Data.Name = "GDXZ_" + utils.GenerateRandomString(4)
+	}
+	if user.UserName != "" {
+		if appUserInfo.Data.Name != user.UserName {
 			userData["user_name"] = appUserInfo.Data.Name
 		}
+	} else {
+		userData["user_name"] = appUserInfo.Data.Name
 	}
 
 	// 头像
diff --git a/utils/replace.go b/utils/replace.go
index 43cdb31..8082d1e 100644
--- a/utils/replace.go
+++ b/utils/replace.go
@@ -2,7 +2,9 @@ package utils
 
 import (
 	"hepa-calc-api/config"
+	"math/rand"
 	"strings"
+	"time"
 )
 
 // RemoveOssDomain 去除oss地址中的前缀
@@ -20,3 +22,15 @@ func AddOssDomain(url string) string {
 	}
 	return config.C.Oss.OssCustomDomainName + url
 }
+
+// GenerateRandomString 生成随机字母字符串
+func GenerateRandomString(n int) string {
+	letters := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+	r := rand.New(rand.NewSource(time.Now().UnixNano())) // 设置随机数种子
+	b := make([]byte, n)                                 // 创建长度为 n 的字节切片
+	for i := range b {
+		b[i] = letters[r.Intn(len(letters))] // 从字母列表中随机选择字符
+	}
+	return string(b) // 转换为字符串返回
+}