diff --git a/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/enums/PacketType.java b/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/enums/PacketType.java
index 0f0a928..f4c0d28 100644
--- a/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/enums/PacketType.java
+++ b/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/enums/PacketType.java
@@ -7,6 +7,7 @@ public enum PacketType {
     //发送消息
     SEND(20),
     SEND_ACK(21),
+    CONVERSATION(30),
     //心跳包
     PING(40),
     PANG(41),
diff --git a/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/im/manager/ImManager.java b/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/im/manager/ImManager.java
index 4766b80..bab394f 100644
--- a/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/im/manager/ImManager.java
+++ b/SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/im/manager/ImManager.java
@@ -51,6 +51,7 @@ public class ImManager implements IMInterface {
 
     // 新消息到达
     private String topic_arrive;
+    private String topic_conversation;
 
     // 发送消息应答
     private String topic_send_ack;
@@ -102,6 +103,7 @@ public class ImManager implements IMInterface {
         topic_send_ack = Constant.getSdkAppID() + "/" + PacketType.SEND_ACK + Constant.getUserId();
         topic_connected = Constant.getSdkAppID() + "/" + PacketType.CONNECTED + Constant.getUserId();
         topic_arrive = Constant.getSdkAppID() + "/" + PacketType.SEND + Constant.getUserId();
+        topic_conversation = Constant.getSdkAppID() + "/" + PacketType.CONVERSATION + Constant.getUserId();
         topic_pang = Constant.getSdkAppID() + "/" + PacketType.PANG + Constant.getUserId();
         topic_result = Constant.getSdkAppID() + "/" + PacketType.RESULT + Constant.getUserId();
         topic_system = Constant.getSdkAppID() + "/" + PacketType.SYSTEM + Constant.getUserId();
@@ -136,6 +138,7 @@ public class ImManager implements IMInterface {
                         mqttClient.subscribe(topic_pang, 2);
                         mqttClient.subscribe(topic_result, 2);
                         mqttClient.subscribe(topic_system, 2);
+                        mqttClient.subscribe(topic_conversation, 2);
                         Log.e("======>connectComplete", topic_send_ack);
                     } catch (MqttException e) {
                         Log.e(TAG, "=====>connectComplete", e);
@@ -184,6 +187,10 @@ public class ImManager implements IMInterface {
                         handler.sendMessage(m);
 
                     }
+                    // 会话更新
+                    else if (topic.equals(topic_conversation)) {
+                        Log.d("======>会话列表更新", topic + "::\n" + msg);
+                    }
                     // 新消息送达
                     else if (topic.equals(topic_arrive)) {
                         SZYXMessage szyxMessage = GsonImplHelp.get().toObject(msg, SZYXMessage.class);
@@ -197,7 +204,7 @@ public class ImManager implements IMInterface {
                             });
                         }
                     } else
-                        Log.e("======>messageArrived", topic + "::" + msg);
+                        Log.e("======>未知消息", topic + "::" + msg);
 
 
                 }
diff --git a/app/src/main/java/cn/org/bjca/trust/android/imdemo/vm/GroupVM.java b/app/src/main/java/cn/org/bjca/trust/android/imdemo/vm/GroupVM.java
index 213a2b0..fee1d06 100644
--- a/app/src/main/java/cn/org/bjca/trust/android/imdemo/vm/GroupVM.java
+++ b/app/src/main/java/cn/org/bjca/trust/android/imdemo/vm/GroupVM.java
@@ -11,7 +11,7 @@ public class GroupVM extends BaseListViewModel<UserItem> {
 
     private final ArrayList<UserItem> list = new ArrayList<UserItem>() {
         {
-            add(new UserItem("ce91ad9b-ba88-4e21-a868-d8fb0842a55f", "Android应用", "https://i.buyiju.com/img/zidian2/766.jpg", "男"));
+            add(new UserItem("1855c123-5997-4c92-906c-d25c84a6a97d", "Android应用", "https://i.buyiju.com/img/zidian2/766.jpg", "男"));
         }
     };