diff --git a/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/DefaultMqttClientProcessor.java b/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/DefaultMqttClientProcessor.java
index 7504185f..776f0983 100644
--- a/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/DefaultMqttClientProcessor.java
+++ b/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/DefaultMqttClientProcessor.java
@@ -78,10 +78,8 @@ public void processConAck(ChannelContext context, MqttConnAckMessage message) {
 				}
 				// 2. 发布连接通知
 				publishConnectEvent(context);
-				// 3. 如果 session 不存在重连时发送重新订阅，更改 ip、端口之后需要重新发送订阅
-				if (!connAckVariableHeader.isSessionPresent() || MqttClient.isNeedReSub(context)) {
-					reSendSubscription(context);
-				}
+				// 3. 发送订阅，不管服务端是否存在 session 都发送
+				reSendSubscription(context);
 				break;
 			case CONNECTION_REFUSED_BAD_USER_NAME_OR_PASSWORD:
 			case CONNECTION_REFUSED_IDENTIFIER_REJECTED:
diff --git a/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/MqttClient.java b/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/MqttClient.java
index d8dc0b4b..14aca1c0 100644
--- a/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/MqttClient.java
+++ b/mica-mqtt-client/src/main/java/net/dreamlu/iot/mqtt/core/client/MqttClient.java
@@ -45,10 +45,6 @@
  */
 public final class MqttClient {
 	private static final Logger logger = LoggerFactory.getLogger(MqttClient.class);
-	/**
-	 * 是否需要重新订阅
-	 */
-	private static final String MQTT_NEED_RE_SUB = "MQTT_NEED_RE_SUB";
 	private final TioClient tioClient;
 	private final MqttClientCreator config;
 	private final TioClientConfig clientTioConfig;
@@ -517,7 +513,6 @@ public boolean reconnect(Node serverNode) {
 		}
 		try {
 			this.context = tioClient.connect(serverNode, config.getTimeout());
-			this.context.set(MQTT_NEED_RE_SUB, (byte) 1);
 			return true;
 		} catch (Exception e) {
 			logger.error("mqtt client reconnect error", e);
@@ -525,16 +520,6 @@ public boolean reconnect(Node serverNode) {
 		return false;
 	}
 
-	/**
-	 * 是否需要重新订阅
-	 *
-	 * @param context ChannelContext
-	 * @return 是否需要重新订阅
-	 */
-	public static boolean isNeedReSub(ChannelContext context) {
-		return context.getAndRemove(MQTT_NEED_RE_SUB) != null;
-	}
-
 	/**
 	 * 断开 mqtt 连接
 	 *