diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/BotImpl.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/BotImpl.kt
index 55bd650b8..371627b97 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/BotImpl.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/BotImpl.kt
@@ -74,11 +74,13 @@ internal abstract class BotImpl<N : BotNetworkHandler> constructor(
                 // bot 还未登录就被 close
                 return@subscribeAlways
             }
-            if (network.areYouOk() && event !is BotOfflineEvent.Force) {
+            /*
+            if (network.areYouOk() && event !is BotOfflineEvent.Force && event !is BotOfflineEvent.MsfOffline) {
                 // network 运行正常
                 return@subscribeAlways
-            }
+            }*/
             when (event) {
+                is BotOfflineEvent.MsfOffline,
                 is BotOfflineEvent.Dropped,
                 is BotOfflineEvent.RequireReconnect
                 -> {
@@ -105,7 +107,12 @@ internal abstract class BotImpl<N : BotNetworkHandler> constructor(
                                     @OptIn(ThisApiMustBeUsedInWithConnectionLockBlock::class)
                                     relogin((event as? BotOfflineEvent.Dropped)?.cause)
                                 }
-                                launch { BotReloginEvent(bot, (event as? BotOfflineEvent.Dropped)?.cause).broadcast() }
+                                launch {
+                                    BotReloginEvent(
+                                        bot,
+                                        (event as? BotOfflineEvent.CauseAware)?.cause
+                                    ).broadcast()
+                                }
                                 return
                             }.getOrElse {
                                 if (it is LoginFailedException && !it.killBot) {
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt
index cad9f7eb1..c15a278d6 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt
@@ -96,14 +96,17 @@ internal class QQAndroidBotNetworkHandler(coroutineContext: CoroutineContext, bo
     private fun startHeartbeatJobOrKill(cancelCause: CancellationException? = null): Job {
         heartbeatJob?.cancel(cancelCause)
 
-        return this@QQAndroidBotNetworkHandler.launch(CoroutineName("Heartbeat")) {
+        return this@QQAndroidBotNetworkHandler.launch(CoroutineName("Heartbeat")) heartBeatJob@{
             while (this.isActive) {
                 delay(bot.configuration.heartbeatPeriodMillis)
                 val failException = doHeartBeat()
                 if (failException != null) {
                     delay(bot.configuration.firstReconnectDelayMillis)
-                    bot.launch { BotOfflineEvent.Dropped(bot, failException).broadcast() }
-                    return@launch
+
+                    bot.launch {
+                        BotOfflineEvent.Dropped(bot, failException).broadcast()
+                    }
+                    return@heartBeatJob
                 }
             }
         }.also { heartbeatJob = it }
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/login/StatSvc.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/login/StatSvc.kt
index 7242eb1fa..c0834831a 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/login/StatSvc.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/login/StatSvc.kt
@@ -182,7 +182,7 @@ internal class StatSvc {
     }
 
     internal object ReqMSFOffline :
-        IncomingPacketFactory<BotOfflineEvent.Dropped>("StatSvc.ReqMSFOffline", "StatSvc.RspMSFForceOffline") {
+        IncomingPacketFactory<BotOfflineEvent.MsfOffline>("StatSvc.ReqMSFOffline", "StatSvc.RspMSFForceOffline") {
 
         internal data class MsfOfflineToken(
             val uin: Long,
@@ -190,13 +190,13 @@ internal class StatSvc {
             val const: Byte
         ) : Packet, RuntimeException("dropped by StatSvc.ReqMSFOffline")
 
-        override suspend fun ByteReadPacket.decode(bot: QQAndroidBot, sequenceId: Int): BotOfflineEvent.Dropped {
+        override suspend fun ByteReadPacket.decode(bot: QQAndroidBot, sequenceId: Int): BotOfflineEvent.MsfOffline {
             val decodeUniPacket = readUniPacket(RequestMSFForceOffline.serializer())
             @Suppress("INVISIBLE_MEMBER")
-            return BotOfflineEvent.Dropped(bot, MsfOfflineToken(decodeUniPacket.uin, decodeUniPacket.iSeqno, 0))
+            return BotOfflineEvent.MsfOffline(bot, MsfOfflineToken(decodeUniPacket.uin, decodeUniPacket.iSeqno, 0))
         }
 
-        override suspend fun QQAndroidBot.handle(packet: BotOfflineEvent.Dropped, sequenceId: Int): OutgoingPacket? {
+        override suspend fun QQAndroidBot.handle(packet: BotOfflineEvent.MsfOffline, sequenceId: Int): OutgoingPacket? {
             val cause = packet.cause
             check(cause is MsfOfflineToken) { "internal error: handling $packet in StatSvc.ReqMSFOffline" }
             return buildResponseUniPacket(client) {
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/events/bot.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/events/bot.kt
index 41603de9f..ef61904d8 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/events/bot.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/events/bot.kt
@@ -16,6 +16,9 @@ package net.mamoe.mirai.event.events
 import net.mamoe.mirai.Bot
 import net.mamoe.mirai.event.AbstractEvent
 import net.mamoe.mirai.qqandroid.network.Packet
+import net.mamoe.mirai.utils.MiraiExperimentalAPI
+import net.mamoe.mirai.utils.MiraiInternalAPI
+import net.mamoe.mirai.utils.SinceMirai
 import kotlin.jvm.JvmMultifileClass
 import kotlin.jvm.JvmName
 
@@ -35,7 +38,8 @@ sealed class BotOfflineEvent : BotEvent, AbstractEvent() {
     /**
      * 主动离线. 主动广播这个事件也可以让 [Bot] 关闭.
      */
-    data class Active(override val bot: Bot, val cause: Throwable?) : BotOfflineEvent(), BotActiveEvent
+    data class Active(override val bot: Bot, override val cause: Throwable?) : BotOfflineEvent(), BotActiveEvent,
+        CauseAware
 
     /**
      * 被挤下线
@@ -45,15 +49,31 @@ sealed class BotOfflineEvent : BotEvent, AbstractEvent() {
         BotPassiveEvent
 
     /**
-     * 被服务器断开或因网络问题而掉线
+     * 被服务器断开
      */
-    data class Dropped internal constructor(override val bot: Bot, val cause: Throwable?) : BotOfflineEvent(), Packet,
-        BotPassiveEvent
+    @SinceMirai("1.1.0")
+    @MiraiInternalAPI("This is very experimental and might be changed")
+    data class MsfOffline internal constructor(override val bot: Bot, override val cause: Throwable?) :
+        BotOfflineEvent(), Packet,
+        BotPassiveEvent, CauseAware
+
+    /**
+     * 因网络问题而掉线
+     */
+    data class Dropped internal constructor(override val bot: Bot, override val cause: Throwable?) : BotOfflineEvent(),
+        Packet,
+        BotPassiveEvent, CauseAware
 
     /**
      * 服务器主动要求更换另一个服务器
      */
+    @MiraiInternalAPI
     data class RequireReconnect internal constructor(override val bot: Bot) : BotOfflineEvent(), Packet, BotPassiveEvent
+
+    @MiraiExperimentalAPI
+    interface CauseAware {
+        val cause: Throwable?
+    }
 }
 
 /**