diff --git a/srvlib/serversessionmgr.go b/srvlib/serversessionmgr.go
index baad454..b58883d 100644
--- a/srvlib/serversessionmgr.go
+++ b/srvlib/serversessionmgr.go
@@ -9,8 +9,7 @@ import (
 )
 
 /*
- 服务器信息注册，单个服务器可能包含多个服务端口
- 服务器信息->session
+ 服务器信息注册，单个服务器可能包含多个子服务端口
 */
 
 var (
@@ -35,64 +34,79 @@ func (ssm *ServerSessionMgr) AddListener(l ServerSessionRegisteListener) ServerS
 
 func (ssm *ServerSessionMgr) RegisteSession(s *netlib.Session) bool {
 	attr := s.GetAttribute(SessionAttributeServerInfo)
-	if attr != nil {
-		if srvInfo, ok := attr.(*protocol.SSSrvRegiste); ok && srvInfo != nil {
-			areaId := int(srvInfo.GetAreaId())
-			srvType := int(srvInfo.GetType())
-			srvId := int(srvInfo.GetId())
-			if a, exist := ssm.sessions[areaId]; !exist {
-				ssm.sessions[areaId] = make(map[int]map[int]*netlib.Session)
-				a = ssm.sessions[areaId]
-				a[srvType] = make(map[int]*netlib.Session)
-			} else {
-				if _, exist := a[srvType]; !exist {
-					a[srvType] = make(map[int]*netlib.Session)
-				}
-			}
-
-			if _, exist := ssm.sessions[areaId][srvType][srvId]; !exist {
-				logger.Logger.Infof("(ssm *ServerSessionMgr) RegisteSession %v", srvInfo)
-				ssm.sessions[areaId][srvType][srvId] = s
-				if len(ssm.listeners) != 0 {
-					for _, l := range ssm.listeners {
-						l.OnRegiste(s)
-					}
-				}
-			} else {
-				logger.Logger.Warnf("###(ssm *ServerSessionMgr) RegisteSession repeated areaid:%v srvType:%v srvId:%v", areaId, srvType, srvId)
-			}
-		}
-	} else {
-		logger.Logger.Warnf("ServerSessionMgr.RegisteSession SessionAttributeServerInfo=nil")
+	if attr == nil {
+		logger.Logger.Warnf("服务器注册信息为空")
+		return false
 	}
+
+	srvInfo, ok := attr.(*protocol.SSSrvRegiste)
+	if !ok || srvInfo == nil {
+		logger.Logger.Warnf("服务器注册信息错误")
+		return false
+	}
+
+	areaId := int(srvInfo.GetAreaId())
+	srvType := int(srvInfo.GetType())
+	srvId := int(srvInfo.GetId())
+
+	if _, ok := ssm.sessions[areaId]; !ok {
+		ssm.sessions[areaId] = make(map[int]map[int]*netlib.Session)
+	}
+	if _, ok := ssm.sessions[areaId][srvType]; !ok {
+		ssm.sessions[areaId][srvType] = make(map[int]*netlib.Session)
+	}
+
+	session, has := ssm.sessions[areaId][srvType][srvId]
+	if has && session != nil && session != s {
+		logger.Logger.Warnf("删除旧服务器注册: %v", srvInfo)
+		ssm.UnregisteSession(session)
+	}
+
+	logger.Logger.Infof("服务器注册成功：%v", srvInfo)
+	ssm.sessions[areaId][srvType][srvId] = s
+	if len(ssm.listeners) != 0 {
+		for _, l := range ssm.listeners {
+			l.OnRegiste(s)
+		}
+	}
+
 	return true
 }
 
+// UnregisteSession 服务器关闭
+// 需要支持幂等性
 func (ssm *ServerSessionMgr) UnregisteSession(s *netlib.Session) bool {
 	attr := s.GetAttribute(SessionAttributeServerInfo)
-	if attr != nil {
-		if srvInfo, ok := attr.(*protocol.SSSrvRegiste); ok && srvInfo != nil {
-			logger.Logger.Infof("ServerSessionMgr.UnregisteSession try %v", srvInfo)
-			areaId := int(srvInfo.GetAreaId())
-			srvType := int(srvInfo.GetType())
-			srvId := int(srvInfo.GetId())
-			if a, exist := ssm.sessions[areaId]; exist {
-				if b, exist := a[srvType]; exist {
-					if _, exist := b[srvId]; exist {
-						logger.Logger.Infof("ServerSessionMgr.UnregisteSession %v success", srvInfo)
-						delete(b, srvId)
-						if len(ssm.listeners) != 0 {
-							for _, l := range ssm.listeners {
-								l.OnUnregiste(s)
-							}
-						}
-					} else {
-						logger.Logger.Warnf("(ssm *ServerSessionMgr) UnregisteSession found not fit session, area:%v type:%v id:%v", areaId, srvType, srvId)
+	if attr == nil {
+		return false
+	}
+
+	srvInfo, ok := attr.(*protocol.SSSrvRegiste)
+	if !ok || srvInfo == nil {
+		return false
+	}
+
+	logger.Logger.Tracef("尝试删除服务器注册：%v", srvInfo)
+	areaId := int(srvInfo.GetAreaId())
+	srvType := int(srvInfo.GetType())
+	srvId := int(srvInfo.GetId())
+
+	if a, exist := ssm.sessions[areaId]; exist {
+		if b, exist := a[srvType]; exist {
+			if conn, exist := b[srvId]; exist && s == conn {
+				logger.Logger.Infof("删除服务器注册成功 %v", srvInfo)
+				delete(b, srvId)
+				if len(ssm.listeners) != 0 {
+					for _, l := range ssm.listeners {
+						l.OnUnregiste(s)
 					}
 				}
+			} else {
+				logger.Logger.Tracef("服务器注册信息已经删除")
 			}
 		}
 	}
+
 	return true
 }