diff --git a/live/src/main/java/com/yunbao/live/views/PDLiveConversationFragment.java b/live/src/main/java/com/yunbao/live/views/PDLiveConversationFragment.java
index f83e318f4..3ad61d8b1 100644
--- a/live/src/main/java/com/yunbao/live/views/PDLiveConversationFragment.java
+++ b/live/src/main/java/com/yunbao/live/views/PDLiveConversationFragment.java
@@ -5,6 +5,7 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.text.Editable;
+import android.text.InputFilter;
 import android.text.TextWatcher;
 import android.view.MotionEvent;
 import android.view.View;
@@ -12,6 +13,7 @@ import android.view.View;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.lifecycle.Observer;
+import androidx.recyclerview.widget.RecyclerView;
 
 import com.yunbao.common.event.PDChatInputModeEvent;
 import com.yunbao.common.http.base.HttpCallback;
@@ -52,6 +54,18 @@ public class PDLiveConversationFragment extends ConversationFragment {
 
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        mList.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                super.onScrollStateChanged(recyclerView, newState);
+            }
+
+            @Override
+            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                super.onScrolled(recyclerView, dx, dy);
+                EventBus.getDefault().post(new PDChatInputModeEvent(InputMode.TextInput));
+            }
+        });
         super.onViewCreated(view, savedInstanceState);
         view.setBackgroundColor(Color.parseColor("#00000000"));
         //TODO 下面片段是尝试修复模拟器emoji无法唤起的bug。后续版本解决该问题：
@@ -84,7 +98,6 @@ public class PDLiveConversationFragment extends ConversationFragment {
             }
         });
 */
-
         mRongExtensionViewModel.getInputModeLiveData().observe(getViewLifecycleOwner(), new Observer<InputMode>() {
             @Override
             public void onChanged(InputMode inputMode) {
@@ -118,6 +131,9 @@ public class PDLiveConversationFragment extends ConversationFragment {
                 editString = editable.toString();
             }
         });
+        mRongExtension.getInputPanel().getEditText().setFilters(new InputFilter[]{
+                new InputFilter.LengthFilter(300)
+        });
     }
 
     @Override