diff --git a/jsowell-admin/src/main/java/com/jsowell/service/MemberService.java b/jsowell-admin/src/main/java/com/jsowell/service/MemberService.java
index 15950f0b0..98a49dec1 100644
--- a/jsowell-admin/src/main/java/com/jsowell/service/MemberService.java
+++ b/jsowell-admin/src/main/java/com/jsowell/service/MemberService.java
@@ -57,6 +57,7 @@ import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.cglib.beans.BeanMap;
+import org.springframework.dao.DuplicateKeyException;
 import org.springframework.stereotype.Service;
 
 import java.math.BigDecimal;
@@ -185,7 +186,8 @@ public class MemberService {
 			throw new BusinessException(ReturnCodeEnum.CODE_OPEN_ID_IS_NULL_ERROR);
 		}
 
-		String lockKey = CacheConstants.USER_APP_REGISTER + phoneNumber;
+		// 锁键包含手机号和运营商ID，确保同一运营商下的同一手机号串行处理，不同运营商互不影响
+		String lockKey = CacheConstants.USER_APP_REGISTER + phoneNumber + ":" + firstLevelMerchantId;
 		String requestId = IdUtils.fastUUID();
 		Boolean isLock = false;
 		try {
@@ -193,7 +195,7 @@ public class MemberService {
 			isLock = redisCache.lock(lockKey, requestId, 60);
 			if (!isLock) {
 				// 获取锁失败，说明有其他请求正在处理，提示用户稍候
-				log.warn("获取注册锁失败，可能有并发请求正在处理, phoneNumber:{}", phoneNumber);
+				log.warn("获取注册锁失败，可能有并发请求正在处理, phoneNumber:{}, merchantId:{}", phoneNumber, firstLevelMerchantId);
 				throw new BusinessException(ReturnCodeEnum.CODE_MEMBER_REGISTER_AND_LOGIN_PROCESSING);
 			}
 
@@ -226,7 +228,21 @@ public class MemberService {
 							.build();
 					memberTransactionDTO.setMemberWalletInfo(memberWalletInfo);
 				}
-				transactionService.createMember(memberTransactionDTO);
+
+				try {
+					// 插入会员数据
+					transactionService.createMember(memberTransactionDTO);
+				} catch (DuplicateKeyException e) {
+					// 捕获数据库唯一索引冲突异常（极端并发情况下的兜底机制）
+					// 说明该手机号在该运营商下已经被其他并发请求注册了，重新查询获取已存在的会员信息
+					log.warn("会员注册时检测到唯一索引冲突，重新查询已存在的会员, phoneNumber:{}, merchantId:{}", phoneNumber, firstLevelMerchantId);
+					memberBasicInfo = memberBasicInfoService.selectInfoByMobileNumber(phoneNumber, firstLevelMerchantId);
+					if (memberBasicInfo == null) {
+						// 理论上不应该走到这里，如果走到这里说明数据被删除了，抛出异常
+						log.error("唯一索引冲突后重新查询会员信息为空, phoneNumber:{}, merchantId:", phoneNumber, firstLevelMerchantId);
+						throw new BusinessException(ReturnCodeEnum.CODE_MEMBER_REGISTER_AND_LOGIN_ERROR);
+					}
+				}
 			} else {
 				boolean updateFlag = false;
 				if (AdapayPayChannelEnum.WX_LITE.getValue().equals(dto.getRequestSource()) && !StringUtils.equals(memberBasicInfo.getOpenId(), openId)) {
@@ -255,7 +271,7 @@ public class MemberService {
 						redisCache.unLock(lockKey);
 					}
 				} catch (Exception e) {
-					log.error("释放注册锁失败, phoneNumber:{}, error:{}", phoneNumber, e.getMessage());
+					log.error("释放注册锁失败, phoneNumber:{}, merchantId:{}, error:{}", phoneNumber, firstLevelMerchantId, e.getMessage());
 				}
 			}
 		}