diff --git a/backend/services/referral-service/src/application/services/referral.service.ts b/backend/services/referral-service/src/application/services/referral.service.ts
index 087dee3..5f408f8 100644
--- a/backend/services/referral-service/src/application/services/referral.service.ts
+++ b/backend/services/referral-service/src/application/services/referral.service.ts
@@ -107,13 +107,16 @@ export class ReferralService {
     return { referralCode: saved.referralCode };
   }
 
-  /** 获取我的推荐信息 */
+  /** 获取我的推荐信息（老用户自动补建档案） */
   async getMyInfo(userId: string): Promise<ReferralInfo> {
-    const profile = await this.profileRepo.findByUserId(userId);
+    let profile = await this.profileRepo.findByUserId(userId);
     if (!profile) {
-      throw new NotFoundException('推荐档案不存在');
+      // 推荐服务上线前注册的老用户，按需自动创建推荐档案
+      this.logger.log(`老用户自动补建推荐档案: userId=${userId}`);
+      await this.createProfile({ userId, usedCode: null });
+      profile = await this.profileRepo.findByUserId(userId);
     }
-    return this.toInfo(profile);
+    return this.toInfo(profile!);
   }
 
   /** 验证推荐码是否有效 */