diff --git a/znet/connmanager.go b/znet/connmanager.go
index 202af7e..c374faa 100644
--- a/znet/connmanager.go
+++ b/znet/connmanager.go
@@ -3,49 +3,51 @@ package znet
 import (
 	"errors"
 	"fmt"
-	"sync/atomic"
+	"sync"
 
 	"github.com/aceld/zinx/ziface"
 )
 
 //ConnManager 连接管理模块
 type ConnManager struct {
-	connections atomic.Value
+	connections map[uint32]ziface.IConnection
+	connLock    sync.RWMutex
 }
 
 //NewConnManager 创建一个链接管理
 func NewConnManager() *ConnManager {
-	var cm = &ConnManager{}
-	connections := make(map[uint32]ziface.IConnection)
-	cm.connections.Store(connections)
-	return cm
+	return &ConnManager{
+		connections: make(map[uint32]ziface.IConnection),
+	}
 }
 
 //Add 添加链接
 func (connMgr *ConnManager) Add(conn ziface.IConnection) {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
 
+	connMgr.connLock.Lock()
 	//将conn连接添加到ConnMananger中
-	connections[conn.GetConnID()] = conn
-	connMgr.connections.Store(connections)
+	connMgr.connections[conn.GetConnID()] = conn
+	connMgr.connLock.Unlock()
 
 	fmt.Println("connection add to ConnManager successfully: conn num = ", connMgr.Len())
 }
 
 //Remove 删除连接
 func (connMgr *ConnManager) Remove(conn ziface.IConnection) {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
+
+	connMgr.connLock.Lock()
 	//删除连接信息
-	delete(connections, conn.GetConnID())
-	connMgr.connections.Store(connections)
+	delete(connMgr.connections, conn.GetConnID())
+	connMgr.connLock.Unlock()
 	fmt.Println("connection Remove ConnID=", conn.GetConnID(), " successfully: conn num = ", connMgr.Len())
 }
 
 //Get 利用ConnID获取链接
 func (connMgr *ConnManager) Get(connID uint32) (ziface.IConnection, error) {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
+	connMgr.connLock.RLock()
+	defer connMgr.connLock.RUnlock()
 
-	if conn, ok := connections[connID]; ok {
+	if conn, ok := connMgr.connections[connID]; ok {
 		return conn, nil
 	}
 
@@ -55,35 +57,38 @@ func (connMgr *ConnManager) Get(connID uint32) (ziface.IConnection, error) {
 
 //Len 获取当前连接
 func (connMgr *ConnManager) Len() int {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
-	return len(connections)
+	connMgr.connLock.RLock()
+	length := len(connMgr.connections)
+	connMgr.connLock.RUnlock()
+	return length
 }
 
 //ClearConn 清除并停止所有连接
 func (connMgr *ConnManager) ClearConn() {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
+	connMgr.connLock.Lock()
 
 	//停止并删除全部的连接信息
-	for connID, conn := range connections {
+	for connID, conn := range connMgr.connections {
 		//停止
 		conn.Stop()
 		//删除
-		delete(connections, connID)
+		delete(connMgr.connections, connID)
 	}
-	connMgr.connections.Store(connections)
+	connMgr.connLock.Unlock()
 	fmt.Println("Clear All Connections successfully: conn num = ", connMgr.Len())
 }
 
 //ClearOneConn  利用ConnID获取一个链接 并且删除
 func (connMgr *ConnManager) ClearOneConn(connID uint32) {
-	connections:=connMgr.connections.Load().(map[uint32]ziface.IConnection)
+	connMgr.connLock.Lock()
+	defer connMgr.connLock.Unlock()
 
+	connections := connMgr.connections
 	if conn, ok := connections[connID]; ok {
 		//停止
 		conn.Stop()
 		//删除
 		delete(connections, connID)
-		connMgr.connections.Store(connections)
 		fmt.Println("Clear Connections ID:  ", connID, "succeed")
 		return
 	}