diff --git a/app/src/main/java/com/kanglai/push/ui/vm/MessageViewModel.java b/app/src/main/java/com/kanglai/push/ui/vm/MessageViewModel.java
index a21bfa6..586a520 100644
--- a/app/src/main/java/com/kanglai/push/ui/vm/MessageViewModel.java
+++ b/app/src/main/java/com/kanglai/push/ui/vm/MessageViewModel.java
@@ -59,7 +59,7 @@ public class MessageViewModel extends ToolbarViewModel<MessageFragment> {
 
     public void refresh(RefreshLayout refresh) {
         Map<String, LocalPushChatMsg> localHistoryMsg = HistoryMsgUtil.select();
-        if (localHistoryMsg != null) {
+        if (localHistoryMsg != null && !localHistoryMsg.isEmpty()) {
             mActivity.mAdapter.refresh(localHistoryMsg.values());
             mActivity.mLoadingLayout.showContent();
         } else mActivity.mLoadingLayout.showEmpty();
diff --git a/app/src/main/java/com/kanglai/push/util/HistoryMsgUtil.java b/app/src/main/java/com/kanglai/push/util/HistoryMsgUtil.java
index 55e1a49..76f216e 100644
--- a/app/src/main/java/com/kanglai/push/util/HistoryMsgUtil.java
+++ b/app/src/main/java/com/kanglai/push/util/HistoryMsgUtil.java
@@ -9,7 +9,7 @@ import com.kanglai.push.entity.LocalPushChatMsg;
 import com.kanglai.push.entity.User;
 
 import java.lang.reflect.Type;
-import java.util.Map;
+import java.util.HashMap;
 import java.util.Objects;
 
 import lombok.experimental.UtilityClass;
@@ -19,17 +19,17 @@ public class HistoryMsgUtil {
 
     private User user = CacheDiskUtils.getInstance().getParcelable(CacheConstant.USER_INFO, User.CREATOR, new User());
 
-    public Map<String, LocalPushChatMsg> select() {
+    public HashMap<String, LocalPushChatMsg> select() {
         String localHistoryMsgJson = CacheDiskUtils.getInstance().getString(user.getId().concat(user.getUserType())  ,"");
-        Type type = new TypeToken<Map<String, LocalPushChatMsg>>(){}.getType();
+        Type type = new TypeToken<HashMap<String, LocalPushChatMsg>>(){}.getType();
         return new Gson().fromJson(localHistoryMsgJson, type);
     }
 
     public void put(String key,LocalPushChatMsg value) {
         Objects.requireNonNull(key);
         String localHistoryMsgJson = CacheDiskUtils.getInstance().getString(user.getId().concat(user.getUserType())  ,"");
-        Type type = new TypeToken<Map<String, LocalPushChatMsg>>(){}.getType();
-        Map<String, LocalPushChatMsg> localHistoryMsg = Objects.requireNonNullElse(new Gson().fromJson(localHistoryMsgJson, type), MapUtils.newHashMap());
+        Type type = new TypeToken<HashMap<String, LocalPushChatMsg>>(){}.getType();
+        HashMap<String, LocalPushChatMsg> localHistoryMsg = Objects.requireNonNullElse(new Gson().fromJson(localHistoryMsgJson, type), MapUtils.newHashMap());
         localHistoryMsg.put(key, value);
         String newLocalHistoryMsgJson = new Gson().toJson(localHistoryMsg);
         CacheDiskUtils.getInstance().put(user.getId().concat(user.getUserType()), newLocalHistoryMsgJson);
@@ -38,8 +38,8 @@ public class HistoryMsgUtil {
     public void del(String key){
         Objects.requireNonNull(key);
         String localHistoryMsgJson = CacheDiskUtils.getInstance().getString(user.getId().concat(user.getUserType())  ,"");
-        Type type = new TypeToken<Map<String, LocalPushChatMsg>>(){}.getType();
-        Map<String, LocalPushChatMsg> localHistoryMsg = Objects.requireNonNullElse(new Gson().fromJson(localHistoryMsgJson, type), MapUtils.newHashMap());
+        Type type = new TypeToken<HashMap<String, LocalPushChatMsg>>(){}.getType();
+        HashMap<String, LocalPushChatMsg> localHistoryMsg = Objects.requireNonNullElse(new Gson().fromJson(localHistoryMsgJson, type), MapUtils.newHashMap());
         localHistoryMsg.remove(key);
         String newLocalHistoryMsgJson = new Gson().toJson(localHistoryMsg);
         CacheDiskUtils.getInstance().put(user.getId().concat(user.getUserType()), newLocalHistoryMsgJson);