diff --git a/business/jxstore/event/event_tcp.go b/business/jxstore/event/event_tcp.go
index eba061080..bf5de518d 100644
--- a/business/jxstore/event/event_tcp.go
+++ b/business/jxstore/event/event_tcp.go
@@ -61,7 +61,7 @@ func (t *TcpClient) handleConn(c net.Conn) {
 				PrintNo string `json:"print_no"`
 			}{}
 			if err := json.Unmarshal(buffer[0:n], &param); err != nil {
-				c.Write([]byte("err Unmarshal"))
+				c.Write([]byte(err.Error()))
 				return
 			}
 			t.buildMsgMap(param.PrintNo)