diff --git a/uni_modules/uni-id-pages/uniCloud/cloudfunctions/uni-id-co/lib/utils/register.js b/uni_modules/uni-id-pages/uniCloud/cloudfunctions/uni-id-co/lib/utils/register.js
index a500b84da7d1f5c76ae873b0f24161d95ab23a4d..d937610e79caf5325e82a4f3afa3699de5daa31d 100644
--- a/uni_modules/uni-id-pages/uniCloud/cloudfunctions/uni-id-co/lib/utils/register.js
+++ b/uni_modules/uni-id-pages/uniCloud/cloudfunctions/uni-id-co/lib/utils/register.js
@@ -129,12 +129,19 @@ async function postRegister (params = {}) {
 
   const {
     autoSetInviteCode, // 注册时自动设置邀请码
-    forceInviteCode // 必须有邀请码才允许注册，注意此逻辑不可对admin生效
+    forceInviteCode, // 必须有邀请码才允许注册，注意此逻辑不可对admin生效
+    userRegisterDefaultRole // 用户注册时配置的默认角色
   } = this.config
   if (autoSetInviteCode) {
     user.my_invite_code = await getValidInviteCode()
   }
 
+  // 如果用户注册默认角色配置存在且不为空数组
+  if (userRegisterDefaultRole && userRegisterDefaultRole.length) {
+    // 将用户已有的角色和配置的默认角色合并成一个数组，并去重
+    user.role = Array.from(new Set([...(user.role || []), ...userRegisterDefaultRole]))
+  }
+
   const isAdmin = user.role && user.role.includes('admin')
 
   if (forceInviteCode && !isAdmin && !inviteCode) {