diff --git a/entry/src/main/ets/pages/compontents/SignalDisplay.ets b/entry/src/main/ets/pages/compontents/SignalDisplay.ets
index ba58575..e6caae5 100644
--- a/entry/src/main/ets/pages/compontents/SignalDisplay.ets
+++ b/entry/src/main/ets/pages/compontents/SignalDisplay.ets
@@ -5,7 +5,6 @@ import apiJudgeSdk from 'libJudgeSdk.so'
 import { DifferentialAndSignal } from '../../utils/business/DifferentialAndSignalWorker'
 import { examJudgeMapSetScaling } from '../Judge/JudgeUtils'
 import { dConsole } from '../../utils/LogWorker'
-import { SignDisplayTag } from '../../config'
 
 
 @Component
@@ -24,20 +23,14 @@ export default struct SignalDisplayComponent {
   @State laneSignal: PerLane = InitialPerLane
 
   aboutToAppear(): void {
-    DifferentialAndSignal.onMsg(this.getMsg)
-  }
-
-  getMsg(data: string) {
-    const result: WorkerBackMessage = JSON.parse(data)
-    dConsole.log(SignDisplayTag, "wzj", data)
-    if (result.type === "obtainUdpData") {
-      this.getSignal(result.data as string)
-      this.rawData = result.data as string
-    }
-  }
-
-  aboutToDisappear(): void {
-    DifferentialAndSignal.offMsg(this.getMsg)
+    DifferentialAndSignal.onMsg((data: string) => {
+      const result: WorkerBackMessage = JSON.parse(data)
+      dConsole.log("wzj", data)
+      if (result.type === "obtainUdpData") {
+        this.getSignal(result.data as string)
+        this.rawData = result.data as string
+      }
+    })
   }
 
   getSignal = (msg: string) => {
@@ -46,9 +39,11 @@ export default struct SignalDisplayComponent {
       return
     }
     this.signArr = newArr
+
     for (let i = 0; i <= 12; i++) {
       this.vehicleSignal[i].value = this.signArr[i+2]
     }
+
     this.vehicleSignal[13].value = this.signArr[17]
     this.vehicleSignal[14].value = this.signArr[18]
     this.vehicleSignal[15].value = this.signArr[19]