diff --git a/shared/domain/sdk.ts b/shared/domain/sdk.ts
index d508e40fa..7407d8f47 100644
--- a/shared/domain/sdk.ts
+++ b/shared/domain/sdk.ts
@@ -39,7 +39,7 @@ export class LoginValidateData37 {
     unique_realname_id: string; // 用户身份证唯一标识
 
     @prop({ required: true })
-    childGameId: number; // 子游戏id
+    childGameId: string; // 子游戏id
 
     @prop({ required: true })
     platformAppid: string; // 渠道标识
diff --git a/web-server/app/service/Auth.ts b/web-server/app/service/Auth.ts
index 9b07cc7d6..38be2b066 100644
--- a/web-server/app/service/Auth.ts
+++ b/web-server/app/service/Auth.ts
@@ -414,7 +414,7 @@ export default class Auth extends Service {
         let channelId = getChannelId(channelType, requestResult.data.uid);
         const token = ctx.service.utils.generateStr(256);
         let { isCreate, user} = await UserModel.createOrUpdateChannelUser(channelId, channelType, {
-            ...requestResult.data, childGameId, platformAppid
+            ...requestResult.data, childGameId:`${childGameId}`, platformAppid
         }, token, platform, pkgName, serverType, deviceId, ctx.clientIp);
         if(isCreate) {
             // ctx.service.sdk.reportTAEventWithDistinctId(distinctId, TA_EVENT.REGISTER, null, ctx.clientIp);