diff --git a/entry/src/main/ets/common/utils/UdpClientByCenter.ts b/entry/src/main/ets/common/utils/UdpClientByCenter.ts
index 687fc80f..a254069f 100644
--- a/entry/src/main/ets/common/utils/UdpClientByCenter.ts
+++ b/entry/src/main/ets/common/utils/UdpClientByCenter.ts
@@ -312,6 +312,7 @@ export default class UdpClientByCenter {
     if (terType == 2) {
       //三型机
       this.onMessage_1Callback = callback;
+      this.udp && this.udp.off('message', this.message_1Fn);
       this.udp && this.udp.on('message', this.message_1Fn);
     } else {
       this.retClass.receiveMsg(callback)