diff --git a/business/jxstore/event/event_tcp.go b/business/jxstore/event/event_tcp.go
index 2a38a215c..336af57a2 100644
--- a/business/jxstore/event/event_tcp.go
+++ b/business/jxstore/event/event_tcp.go
@@ -224,7 +224,7 @@ func buildMsg(printMsg *model.PrintMsg) (data []byte, err error) {
 	//写入数据
 	orderNoHexH, orderNoHexL = int2h8l8(int64(orderNo))
 	printData := hex.EncodeToString([]byte(content))
-	lenData := int64(len(str) + len(const1) + len(orderNoHexH) + len(orderNoHexL) + len(printInit) + len(voice) + len(check) + 2 + len(printData))
+	lenData := int64(len(str) + len(const1) + len(orderNoHexH) + len(orderNoHexL) + len(printInit) + len(voice) + len(check) + 4 + len(printData))
 	x1, x2 := int2h8l8(lenData / 2)
 	dataStr := str + x1 + x2 + const1 + orderNoHexH + orderNoHexL + printInit + voice + printData + check
 	return jxutils.Hextob(dataStr), err