diff --git a/application/api/controller/User.php b/application/api/controller/User.php
index b1f521e..74e29b7 100755
--- a/application/api/controller/User.php
+++ b/application/api/controller/User.php
@@ -187,9 +187,8 @@ class User extends Api
         }
 //        }
         $extend['pay_pwd'] = strtoupper(md5(strtoupper(md5($pwd2.'skund'))));
-        // 生成随机虚拟头像 (DiceBear avataaars 商务风格，URL需<255字符)
-        $avatarSeed = substr(md5(uniqid(mt_rand(), true)), 0, 8);
-        $extend['avatar'] = 'https://api.dicebear.com/9.x/avataaars/png?seed=' . $avatarSeed;
+        // 默认男性商务头像（静态图片）
+        $extend['avatar'] = '/uploads/default_avatar.png';
         $extend['referral_code'] = $this->create_invite_code();    //推荐码
         //注册钱包eth
         $ret = $this->auth->register($username, $password, $email, $mobile, $extend);
diff --git a/public/uploads/default_avatar.png b/public/uploads/default_avatar.png
new file mode 100644
index 0000000..95b1abc
Binary files /dev/null and b/public/uploads/default_avatar.png differ