diff --git a/backend-java/src/main/java/com/competition/modules/pub/service/PublicActivityService.java b/backend-java/src/main/java/com/competition/modules/pub/service/PublicActivityService.java
index 421819a..dfde102 100644
--- a/backend-java/src/main/java/com/competition/modules/pub/service/PublicActivityService.java
+++ b/backend-java/src/main/java/com/competition/modules/pub/service/PublicActivityService.java
@@ -128,6 +128,8 @@ public class PublicActivityService {
      */
     @Transactional
     public BizContestRegistration register(Long contestId, Long userId, Long tenantId, PublicRegisterActivityDto dto) {
+        log.info("开始报名活动，contestId: {}, userId: {}, tenantId: {}", contestId, userId, tenantId);
+
         // 检查是否已报名
         Long existCount = contestRegistrationMapper.selectCount(
                 new LambdaQueryWrapper<BizContestRegistration>()
@@ -156,7 +158,14 @@ public class PublicActivityService {
         reg.setTeamId(dto.getTeamId());
         reg.setRegistrationState(Boolean.TRUE.equals(contest.getRequireAudit()) ? "pending" : "passed");
         reg.setRegistrationTime(LocalDateTime.now());
+        // 设置必填字段
+        reg.setRegistrant(userId.intValue());
+        reg.setAccountNo("user_" + userId);
+        reg.setAccountName("user_" + userId);
+
+        log.info("保存报名记录：{}", reg);
         contestRegistrationMapper.insert(reg);
+        log.info("报名成功，ID: {}", reg.getId());
         return reg;
     }