diff --git a/business/jxstore/cms/api_print.go b/business/jxstore/cms/api_print.go
index 61a172a49..6ce84e93b 100644
--- a/business/jxstore/cms/api_print.go
+++ b/business/jxstore/cms/api_print.go
@@ -382,7 +382,7 @@ func DoPrintMsg(appID int, msgID, printNo, content string, orderNo string) (err
 		Status:  event.PrintMsgWait,
 	}
 
-	t, ok := event.PrintObject[printNo]
+	t, ok := event.PrintObject.GetPrintObj(printNo)
 	if ok {
 		t.Lock()
 		defer t.Unlock()
diff --git a/business/jxstore/event/event_print.go b/business/jxstore/event/event_print.go
index 382b2a76f..cfcb2e289 100644
--- a/business/jxstore/event/event_print.go
+++ b/business/jxstore/event/event_print.go
@@ -2,12 +2,96 @@ package event
 
 import (
 	"fmt"
+	"sync"
 )
 
-var PrintObject = make(map[string]*TcpClient, 100) // 缓存的打印机对象
-var PrintAddrAndIp = make(map[string]string, 100)  // 缓存打印机地址:[ip:printNo] event 文件包,connect只能获取到addr
-var PrintIpAndAddr = make(map[string]string, 100)  // 缓存打印机地址:[printNo:ip] api_controller 只能获取到printNo
+var (
+	PrintObject    *PrintObjectStruct    // 缓存的打印机对象
+	PrintAddrAndIp *PrintAddrAndIpStruct // 缓存打印机地址:[ip:printNo] event 文件包,connect只能获取到addr
+	PrintIpAndAddr *PrintIpAndAddrStruct // 缓存打印机地址:[printNo:ip] api_controller 只能获取到printNo
+)
 
 func init() {
 	fmt.Println("初始化打印机对象")
+	PrintObject = &PrintObjectStruct{
+		PrintObject: make(map[string]*TcpClient),
+		RWMutex:     new(sync.RWMutex),
+	}
+	PrintAddrAndIp = &PrintAddrAndIpStruct{
+		PrintObject: make(map[string]string),
+		RWMutex:     new(sync.RWMutex),
+	}
+	PrintIpAndAddr = &PrintIpAndAddrStruct{
+		PrintObject: make(map[string]string),
+		RWMutex:     new(sync.RWMutex),
+	}
+}
+
+type PrintObjectStruct struct {
+	PrintObject map[string]*TcpClient
+	*sync.RWMutex
+}
+
+func (p *PrintObjectStruct) GetPrintObj(printNo string) (*TcpClient, bool) {
+	p.RLock()
+	defer p.RUnlock()
+	tcpObj, ok := PrintObject.PrintObject[printNo]
+	return tcpObj, ok
+}
+func (p *PrintObjectStruct) SetPrintObj(printNo string, tcpObj *TcpClient) {
+	p.RLock()
+	defer p.RUnlock()
+	PrintObject.PrintObject[printNo] = tcpObj
+}
+
+func (p *PrintObjectStruct) DelPrintObj(printNo string) {
+	p.RLock()
+	defer p.RUnlock()
+	delete(PrintObject.PrintObject, printNo)
+}
+
+type PrintAddrAndIpStruct struct {
+	PrintObject map[string]string
+	*sync.RWMutex
+}
+
+func (p *PrintAddrAndIpStruct) GetPrintAddrAndIp(ip string) (string, bool) {
+	p.RLock()
+	defer p.RUnlock()
+	printNo, ok := PrintAddrAndIp.PrintObject[ip]
+	return printNo, ok
+}
+func (p *PrintAddrAndIpStruct) SetPrintAddrAndIp(ip string, printNo string) {
+	p.RLock()
+	defer p.RUnlock()
+	PrintAddrAndIp.PrintObject[ip] = printNo
+}
+
+func (p *PrintAddrAndIpStruct) DelPrintAddrAndIp(ip string) {
+	p.RLock()
+	defer p.RUnlock()
+	delete(PrintAddrAndIp.PrintObject, ip)
+}
+
+type PrintIpAndAddrStruct struct {
+	PrintObject map[string]string
+	*sync.RWMutex
+}
+
+func (p *PrintIpAndAddrStruct) GetPrintIpAndAddr(printNo string) (string, bool) {
+	p.RLock()
+	defer p.RUnlock()
+	tcpObj, ok := PrintIpAndAddr.PrintObject[printNo]
+	return tcpObj, ok
+}
+func (p *PrintIpAndAddrStruct) SetPrintIpAndAddr(printNo string, ip string) {
+	p.RLock()
+	defer p.RUnlock()
+	PrintIpAndAddr.PrintObject[printNo] = ip
+}
+
+func (p *PrintIpAndAddrStruct) DelPrintIpAndAddr(printNo string) {
+	p.RLock()
+	defer p.RUnlock()
+	delete(PrintIpAndAddr.PrintObject, printNo)
 }
diff --git a/business/jxstore/event/event_tcp.go b/business/jxstore/event/event_tcp.go
index 78fe5bced..e8e3fb81c 100644
--- a/business/jxstore/event/event_tcp.go
+++ b/business/jxstore/event/event_tcp.go
@@ -71,10 +71,10 @@ func handleConn(c net.Conn) error {
 			} else {
 				fmt.Println("ReadString err:", err)
 			}
-			if printNo, ok := PrintAddrAndIp[printRemoteAddr]; ok {
-				delete(PrintIpAndAddr, printNo)
-				delete(PrintObject, printNo)
-				delete(PrintAddrAndIp, printRemoteAddr)
+			if printNo, ok := PrintAddrAndIp.GetPrintAddrAndIp(printRemoteAddr); ok {
+				PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddr)
+				PrintObject.DelPrintObj(printNo)
+				PrintIpAndAddr.DelPrintIpAndAddr(printRemoteAddr)
 				dao.ExecuteSQL(dao.GetDB(), `UPDATE printer SET status = -1,is_online = -1 WHERE print_no = ? `, []interface{}{printNo}...)
 			}
 			return err
@@ -96,8 +96,8 @@ func handleConn(c net.Conn) error {
 			callback = true
 		}
 
-		t, ok := PrintObject[printNo]
-		if !ok || t.Clients[printNo] == nil || t.Clients[printNo].StatusTime.Sub(time.Now()).Seconds() >= 120 {
+		t, ok := PrintObject.GetPrintObj(printNo)
+		if !ok || t.Clients[printNo] == nil || time.Now().Sub(t.Clients[printNo].StatusTime).Seconds() >= 120 {
 			t = NewTcpClient()
 		}
 
@@ -241,10 +241,10 @@ func doPrint(t *TcpClient, key string) (err error) {
 					}
 
 					if c == nil {
-						if printRemoteAddrIP, have := PrintIpAndAddr[key]; have {
-							delete(PrintIpAndAddr, PrintAddrAndIp[key])
-							delete(PrintAddrAndIp, printRemoteAddrIP)
-							delete(PrintObject, key)
+						if printRemoteAddrIP, have := PrintIpAndAddr.GetPrintIpAndAddr(key); have {
+							PrintIpAndAddr.DelPrintIpAndAddr(key)
+							PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddrIP)
+							PrintObject.DelPrintObj(key)
 						}
 						return
 					}
@@ -254,20 +254,20 @@ func doPrint(t *TcpClient, key string) (err error) {
 						printMsg.Comment = err.Error()
 						dao.UpdateEntity(db, printMsg, "Status", "Comment")
 
-						if printRemoteAddrIP, have := PrintIpAndAddr[key]; have {
-							delete(PrintIpAndAddr, PrintAddrAndIp[key])
-							delete(PrintAddrAndIp, printRemoteAddrIP)
-							delete(PrintObject, key)
+						if printRemoteAddrIP, have := PrintIpAndAddr.GetPrintIpAndAddr(key); have {
+							PrintIpAndAddr.DelPrintIpAndAddr(key)
+							PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddrIP)
+							PrintObject.DelPrintObj(key)
 						}
 						return
 					}
 
 					if _, err = c.Write(data); err != nil {
 						globals.SugarLogger.Debugf("handleTcpMessages err [%v]", err)
-						if printRemoteAddrIP, have := PrintIpAndAddr[key]; have {
-							delete(PrintIpAndAddr, PrintAddrAndIp[key])
-							delete(PrintAddrAndIp, printRemoteAddrIP)
-							delete(PrintObject, key)
+						if printRemoteAddrIP, have := PrintIpAndAddr.GetPrintIpAndAddr(key); have {
+							PrintIpAndAddr.DelPrintIpAndAddr(key)
+							PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddrIP)
+							PrintObject.DelPrintObj(key)
 						}
 
 					} else {
@@ -427,10 +427,10 @@ func HandleCheckTcpHeart(t *TcpClient, key string) {
 				changePrinterStatus(key, printerStatusOffline)
 
 				// 链接出错,彻底删除换成
-				if printRemoteAddrIP, have := PrintIpAndAddr[key]; have {
-					delete(PrintIpAndAddr, PrintAddrAndIp[key])
-					delete(PrintAddrAndIp, printRemoteAddrIP)
-					delete(PrintObject, key)
+				if printRemoteAddrIP, have := PrintIpAndAddr.GetPrintIpAndAddr(key); have {
+					PrintIpAndAddr.DelPrintIpAndAddr(key)
+					PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddrIP)
+					PrintObject.DelPrintObj(key)
 				}
 
 			}
@@ -442,10 +442,10 @@ func HandleCheckTcpHeart(t *TcpClient, key string) {
 		t.delConn(key)
 
 		// 链接出错,彻底删除换成
-		if printRemoteAddrIP, have := PrintIpAndAddr[key]; have {
-			delete(PrintIpAndAddr, PrintAddrAndIp[key])
-			delete(PrintAddrAndIp, printRemoteAddrIP)
-			delete(PrintObject, key)
+		if printRemoteAddrIP, have := PrintIpAndAddr.GetPrintIpAndAddr(key); have {
+			PrintIpAndAddr.DelPrintIpAndAddr(key)
+			PrintAddrAndIp.DelPrintAddrAndIp(printRemoteAddrIP)
+			PrintObject.DelPrintObj(key)
 		}
 
 		return
diff --git a/business/jxstore/event/event_tcp_utils.go b/business/jxstore/event/event_tcp_utils.go
index 4957c9340..23f5982a8 100644
--- a/business/jxstore/event/event_tcp_utils.go
+++ b/business/jxstore/event/event_tcp_utils.go
@@ -646,7 +646,7 @@ func Heartbeat(c net.Conn, t *TcpClient, data string, printNo string, printRemot
 	//4、读打印channel并打印，并切等待回调channel中的消息
 	//5、修改数据库中打印机状态（没在连接池中说明是重新连接的）
 	//6、监听心跳时间，超过1分多钟就clear掉
-	if t.getClients(printNo) == nil || t == nil || t.getPrintStatusTime(printNo).IsZero() || t.Clients[printNo].StatusTime.Sub(time.Now()).Seconds() >= 120 {
+	if t.getClients(printNo) == nil || t == nil || t.getPrintStatusTime(printNo).IsZero() || time.Now().Sub(t.Clients[printNo].StatusTime).Seconds() >= 120 {
 		addConn(c, t, printNo, status)
 		buildAllMap(t, printNo)
 		//t.TimeoutMap[printNo] <- true
@@ -663,9 +663,9 @@ func Heartbeat(c net.Conn, t *TcpClient, data string, printNo string, printRemot
 			globals.SugarLogger.Debugf("监听打印机心跳,不存在则创建 :[%v],printNo[%s]", err, printNo)
 		}
 
-		PrintObject[printNo] = t
-		PrintAddrAndIp[printRemoteAddr] = printNo
-		PrintIpAndAddr[printNo] = printRemoteAddr
+		PrintObject.SetPrintObj(printNo, t)
+		PrintAddrAndIp.SetPrintAddrAndIp(printRemoteAddr, printNo)
+		PrintIpAndAddr.SetPrintIpAndAddr(printNo, printRemoteAddr)
 	} else {
 		//在加到连接池中已经更新了时间，所以放在else里
 		t.setPrintStatusTime(printNo)