diff --git a/modules/arena/modelarena.go b/modules/arena/modelarena.go
index c891c1956..779293577 100644
--- a/modules/arena/modelarena.go
+++ b/modules/arena/modelarena.go
@@ -320,17 +320,30 @@ func (this *modelArena) matchePlayer(uid string, dan, num int32) (results []*pb.
 }
 
 // 随机用户名
-func (this *modelArena) randUserName() string {
-	var s = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*")
-	r := rand.New(rand.NewSource(configure.Now().UnixNano() + rand.Int63n(10000)))
-	result := []byte("DWA_")
-	for i, v := range r.Perm(len(s)) {
-		result = append(result, s[v])
+func (this *modelArena) randUserName() (name string) {
+	var s = []string{"诸", "黎", "疆", "邴", "真", "姣", "齐", "昱", "斌", "施", "霜", "幸", "杜", "言", "裙",
+		"纪", "俊", "剑",
+		"裴", "佩", "姗",
+		"祝", "李", "晴",
+		"符", "鹰", "灏",
+		"邬", "懿", "正",
+		"韶", "柳", "岳",
+		"龙", "震", "衡",
+		"张", "帅", "普",
+		"倪", "钥", "芹",
+		"刘", "晓", "蔓",
+		"谭", "琰", "景",
+		"霍", "佳", "玄",
+		"孟", "蕊", "朵",
+		"谢", "妮", "芳",
+		"井", "凌", "佩"}
+	for i, v := range comm.RandShuffle(len(s)) {
+		name = name + s[v]
 		if i == 3 {
 			break
 		}
 	}
-	return string(result)
+	return name
 }
 
 func (this *modelArena) getAI(mformatId int32) (ai *pb.ArenaPlayer, err error) {