diff --git a/business/jxstore/event/event_tcp.go b/business/jxstore/event/event_tcp.go
index 1732b1711..770f44766 100644
--- a/business/jxstore/event/event_tcp.go
+++ b/business/jxstore/event/event_tcp.go
@@ -111,8 +111,9 @@ var (
 )
 
 type PrintInfo struct {
-	C      net.Conn
-	Status int // 2 //在线缺纸 1  //在线 -1 //离线
+	C          net.Conn
+	Status     int // 2 //在线缺纸 1  //在线 -1 //离线
+	StatusTime time.Time
 }
 
 //连接的客户端,吧每个客户端都放进来
@@ -135,6 +136,7 @@ func ListenTcp() {
 	}
 	globals.SugarLogger.Debugf("begin listenTcp port 8000......")
 	go HandleTcpMessages()
+	go HandleCheckTcpHeart()
 	for {
 		c, err := l.Accept()
 		if err != nil {
@@ -188,10 +190,12 @@ func handleConn(c net.Conn) {
 			printNoData, _ := hex.DecodeString(data[len(heartText) : len(data)-8])
 			printNo = string(printNoData)
 			globals.SugarLogger.Debugf("handleConn printno :[%v]", printNo)
+			tcpClient.s.Lock()
 			if tcpClient.Clients[printNo] == nil {
 				printInfo := &PrintInfo{
-					C:      c,
-					Status: printStatus2JxStatus(data[len(data)-8 : len(data)-6]),
+					C:          c,
+					Status:     printStatus2JxStatus(data[len(data)-8 : len(data)-6]),
+					StatusTime: time.Now(),
 				}
 				tcpClient.Clients[printNo] = printInfo
 				printFail()
@@ -203,8 +207,10 @@ func handleConn(c net.Conn) {
 					if tcpClient.Clients[printNo].Status != status {
 						tcpClient.Clients[printNo].Status = status
 					}
+					tcpClient.Clients[printNo].StatusTime = time.Now()
 				}
 			}
+			tcpClient.s.Unlock()
 		} else if strings.Contains(data, printText) {
 			globals.SugarLogger.Debugf("handleConn print: %v", data)
 			changePrintMsg(data)
@@ -225,12 +231,14 @@ func printFail() (err error) {
 		)
 		if printMsg != nil {
 			if err = checkPrintMsg(printMsg); err == nil {
+				tcpClient.s.RLock()
 				if tcpClient.Clients[printMsg.PrintNo] != nil {
 					if tcpClient.Clients[printMsg.PrintNo].C != nil {
 						c = tcpClient.Clients[printMsg.PrintNo].C
 						data, err = buildMsg(printMsg)
 					}
 				}
+				tcpClient.s.RUnlock()
 				if c != nil {
 					if _, err = c.Write(data); err != nil {
 						globals.SugarLogger.Debugf("handleTcpMessages err [%v]", err)
@@ -312,12 +320,14 @@ func HandleTcpMessages() {
 			)
 			if printMsg != nil {
 				if err = checkPrintMsg(printMsg); err == nil {
+					tcpClient.s.RLock()
 					if tcpClient.Clients[printMsg.PrintNo] != nil {
 						if tcpClient.Clients[printMsg.PrintNo].C != nil {
 							c = tcpClient.Clients[printMsg.PrintNo].C
 							data, err = buildMsg(printMsg)
 						}
 					}
+					tcpClient.s.RUnlock()
 					//else {
 					//	changePrinterStatus(printMsg.PrintNo, printerStatusOffline)
 					//}
@@ -350,23 +360,16 @@ func HandleTcpMessages() {
 	}
 }
 
-func changePrinterStatus(printNo string, status int) (err error) {
-	var (
-		printer = &model.Printer{}
-		db      = dao.GetDB()
-	)
-	sql := `
-		SELECT * FROM printer WHERE print_no = ?
-	`
-	sqlParams := []interface{}{printNo}
-	if err = dao.GetRow(db, printer, sql, sqlParams); err == nil {
-		if printer.ID != 0 {
-			if printer.Status != status {
-				dao.UpdateEntity(db, printer, "Status")
+func HandleCheckTcpHeart() {
+	for {
+		tcpClient.s.Lock()
+		for _, v := range tcpClient.Clients {
+			if time.Now().Sub(v.StatusTime) > time.Minute+time.Second {
+				v.Status = printerStatusOffline
 			}
 		}
+		tcpClient.s.Unlock()
 	}
-	return err
 }
 
 func buildMsg(printMsg *model.PrintMsg) (data []byte, err error) {