diff --git a/Realtime/Conversation/LCIMConversation.cs b/Realtime/Conversation/LCIMConversation.cs
index e2ba235..a96207a 100644
--- a/Realtime/Conversation/LCIMConversation.cs
+++ b/Realtime/Conversation/LCIMConversation.cs
@@ -5,11 +5,16 @@ using System.Linq;
 using System.Collections.ObjectModel;
 using LeanCloud.Realtime.Protocol;
 using LeanCloud.Storage;
+using LeanCloud.Storage.Internal.Codec;
 
 namespace LeanCloud.Realtime {
     public class LCIMConversation {
         public string Id {
-            get; set;
+            get; internal set;
+        }
+
+        public bool Unique {
+            get; internal set;
         }
 
         public string UniqueId {
@@ -19,7 +24,8 @@ namespace LeanCloud.Realtime {
         public string Name {
             get {
                 return this["name"] as string;
-            } set {
+            }
+            internal set {
                 this["name"] = value;
             }
         }
@@ -28,7 +34,7 @@ namespace LeanCloud.Realtime {
             get; set;
         }
 
-        public ReadOnlyCollection<string> MemberIdList {
+        public ReadOnlyCollection<string> MemberIds {
             get {
                 return new ReadOnlyCollection<string>(ids.ToList());
             }
@@ -349,28 +355,13 @@ namespace LeanCloud.Realtime {
             return convId.StartsWith("_tmp:");
         }
 
-        internal void MergeFrom(ConvCommand conv) {
-            if (conv.HasCid) {
-                Id = conv.Cid;
-            }
-            if (conv.HasInitBy) {
-                CreatorId = conv.InitBy;
-            }
-            if (conv.HasCdate) {
-                CreatedAt = DateTime.Parse(conv.Cdate);
-            }
-            if (conv.HasUdate) {
-                UpdatedAt = DateTime.Parse(conv.Udate);
-            }
-            if (conv.M.Count > 0) {
-                ids = new HashSet<string>(conv.M.ToList());
-            }
-        }
-
         internal void MergeFrom(Dictionary<string, object> conv) {
             if (conv.TryGetValue("objectId", out object idObj)) {
                 Id = idObj as string;
             }
+            if (conv.TryGetValue("unique", out object uniqueObj)) {
+                Unique = (bool)uniqueObj;
+            }
             if (conv.TryGetValue("uniqueId", out object uniqueIdObj)) {
                 UniqueId = uniqueIdObj as string;
             }
@@ -384,10 +375,15 @@ namespace LeanCloud.Realtime {
                 CreatorId = co as string;
             }
             if (conv.TryGetValue("m", out object mo)) {
-                ids = new HashSet<string>((mo as IList<object>).Cast<string>());
+                IEnumerable<string> ids = (mo as IList<object>).Cast<string>();
+                this.ids = new HashSet<string>(ids);
             }
             if (conv.TryGetValue("mu", out object muo)) {
-                mutedIds = new HashSet<string>((muo as IList<object>).Cast<string>());
+                IEnumerable<string> ids = (muo as IList<object>).Cast<string>();
+                mutedIds = new HashSet<string>(ids);
+            }
+            if (conv.TryGetValue("lm", out object lmo)) {
+                LastMessageAt = (DateTime)LCDecoder.Decode(lmo);
             }
         }
 
diff --git a/Realtime/Conversation/LCIMConversationQuery.cs b/Realtime/Conversation/LCIMConversationQuery.cs
index 88f4158..3e1cfa4 100644
--- a/Realtime/Conversation/LCIMConversationQuery.cs
+++ b/Realtime/Conversation/LCIMConversationQuery.cs
@@ -1,6 +1,5 @@
 using System.Threading.Tasks;
 using System.Collections;
-using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using LeanCloud.Storage.Internal.Query;
 
diff --git a/Realtime/Internal/Controller/LCIMConversationController.cs b/Realtime/Internal/Controller/LCIMConversationController.cs
index 90d4985..12749a9 100644
--- a/Realtime/Internal/Controller/LCIMConversationController.cs
+++ b/Realtime/Internal/Controller/LCIMConversationController.cs
@@ -78,10 +78,15 @@ namespace LeanCloud.Realtime.Internal.Controller {
                 Client.ConversationDict[convId] = conversation;
             }
             // 合并请求数据
+            conversation.Id = convId;
+            conversation.Unique = unique;
+            conversation.UniqueId = response.ConvMessage.UniqueId;
             conversation.Name = name;
-            conversation.ids = members != null ? new HashSet<string>(members) : null;
-            // 合并服务端推送的数据
-            conversation.MergeFrom(response.ConvMessage);
+            conversation.CreatorId = Client.Id;
+            conversation.ids = members != null ?
+                new HashSet<string>(members) : new HashSet<string>();
+            conversation.CreatedAt = DateTime.Parse(response.ConvMessage.Cdate);
+            conversation.UpdatedAt = conversation.CreatedAt;
             return conversation;
         }
 
@@ -457,12 +462,18 @@ namespace LeanCloud.Realtime.Internal.Controller {
                 Dictionary<string, object> conv = item as Dictionary<string, object>;
                 string convId = conv["objectId"] as string;
                 if (!Client.ConversationDict.TryGetValue(convId, out LCIMConversation conversation)) {
-                    // TODO 解析是哪种类型的对话
-
-                    conversation = new LCIMConversation(Client);
+                    // 解析是哪种类型的对话
+                    if (conv.TryGetValue("tr", out object transient) && (bool)transient == true) {
+                        conversation = new LCIMChatRoom(Client);
+                    } else if (conv.ContainsKey("tempConv") && conv.ContainsKey("tempConvTTL")) {
+                        conversation = new LCIMTemporaryConversation(Client);
+                    } else if (conv.TryGetValue("sys", out object sys) && (bool)sys == true) {
+                        conversation = new LCIMServiceConversation(Client);
+                    } else {
+                        conversation = new LCIMConversation(Client);
+                    }
                     Client.ConversationDict[convId] = conversation;
                 }
-
                 conversation.MergeFrom(conv);
                 return conversation;
             }).ToList().AsReadOnly();
@@ -556,7 +567,6 @@ namespace LeanCloud.Realtime.Internal.Controller {
         /// <returns></returns>
         private async Task OnJoined(ConvCommand convMessage) {
             LCIMConversation conversation = await Client.GetOrQueryConversation(convMessage.Cid);
-            conversation.MergeFrom(convMessage);
             Client.OnInvited?.Invoke(conversation, convMessage.InitBy);
         }
 
diff --git a/Test/Realtime.Test/Conversation.cs b/Test/Realtime.Test/Conversation.cs
index 5769bef..03c0c90 100644
--- a/Test/Realtime.Test/Conversation.cs
+++ b/Test/Realtime.Test/Conversation.cs
@@ -35,7 +35,7 @@ namespace Realtime.Test {
 
             client.OnMembersJoined = (conv, memberList, initBy) => {
                 TestContext.WriteLine($"on members joined: {initBy}");
-                foreach (string memberId in conv.MemberIdList) {
+                foreach (string memberId in conv.MemberIds) {
                     TestContext.WriteLine(memberId);
                 }
                 tcs.SetResult(null);