diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/NotificationHelper.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/NotificationHelper.kt
index 0b99b84d..99d06d80 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/NotificationHelper.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/NotificationHelper.kt
@@ -77,15 +77,18 @@ object NotificationHelper {
      * @param channelType The notification channel type
      * @param title The notification title
      * @param content The notification content text
+     * @param action An optional action retained when the notification is updated
      */
     fun startForeground(
         service: Service,
         channelType: NotificationChannelType,
         title: String,
-        content: String
+        content: String,
+        action: NotificationCompat.Action? = null
     ) {
         ensureChannelCreated(channelType, service)
-        val builder = buildNotificationBuilder(channelType, service, title, content)
+        val builder = buildNotificationBuilder(channelType, service, title, content, action)
+        builderCache[channelType.notificationId] = builder
         service.startForeground(channelType.notificationId, builder.build())
     }
 
@@ -141,7 +144,8 @@ object NotificationHelper {
         channelType: NotificationChannelType,
         context: Context,
         title: String,
-        content: String
+        content: String,
+        action: NotificationCompat.Action? = null
     ): NotificationCompat.Builder {
         val channelId = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             channelType.channelId
@@ -158,5 +162,6 @@ object NotificationHelper {
             .setOnlyAlertOnce(true)
             .setPriority(NotificationCompat.PRIORITY_LOW)
             .setCategory(NotificationCompat.CATEGORY_SERVICE)
+            .apply { action?.let(::addAction) }
     }
-}
\ No newline at end of file
+}
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/service/CoreTestService.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/service/CoreTestService.kt
index ffb9b919..85e25fe1 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/service/CoreTestService.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/service/CoreTestService.kt
@@ -1,8 +1,10 @@
 package com.v2ray.ang.service
 
+import android.app.PendingIntent
 import android.app.Service
 import android.content.Intent
 import android.os.IBinder
+import androidx.core.app.NotificationCompat
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.R
 import com.v2ray.ang.core.CoreNativeManager
@@ -21,6 +23,23 @@ class CoreTestService : Service() {
 
     // manage active batch workers so each batch is independent and cancellable
     private val activeWorkers = Collections.synchronizedList(mutableListOf<RealPingWorkerService>())
+    private val cancelAction by lazy {
+        val intent = Intent(this, CoreTestService::class.java).putExtra(
+            "content",
+            TestServiceMessage(AppConfig.MSG_MEASURE_CONFIG_CANCEL)
+        )
+        val pendingIntent = PendingIntent.getService(
+            this,
+            NotificationChannelType.CORE_TEST.notificationId,
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+        NotificationCompat.Action.Builder(
+            R.drawable.ic_stop_24dp,
+            getString(android.R.string.cancel),
+            pendingIntent
+        ).build()
+    }
 
     /**
      * Initializes the V2Ray environment.
@@ -64,7 +83,8 @@ class CoreTestService : Service() {
             this,
             NotificationChannelType.CORE_TEST,
             getString(R.string.app_name),
-            getString(R.string.title_real_ping_all_server)
+            getString(R.string.title_real_ping_all_server),
+            cancelAction
         )
         val message = intent?.serializable<TestServiceMessage>("content")
         if (message == null) {
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/main/MainViewModel.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/main/MainViewModel.kt
index 10b80041..b8455afd 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/main/MainViewModel.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/main/MainViewModel.kt
@@ -140,9 +140,7 @@ class MainViewModel(
             }
 
             is MainServiceEvent.MeasureConfigFinish -> {
-                if (event.finishedCount == "0") {
-                    onTestsFinished()
-                }
+                onTestsFinished()
             }
         }
     }