diff --git a/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java b/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
index fe73e86..5c5043c 100644
--- a/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
@@ -1,13 +1,17 @@
 package org.ntlab.irisclient;
 
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.RecyclerView;
+import retrofit2.Call;
+import retrofit2.Retrofit;
 
 import android.content.ClipData;
 import android.content.ClipDescription;
 import android.content.ClipboardManager;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
@@ -25,6 +29,7 @@
 import org.ntlab.irisclient.entities.RoomJson;
 import org.ntlab.irisclient.models.Member;
 import org.ntlab.irisclient.models.Settings;
+import org.ntlab.irisclient.resources.RoomsRest;
 import org.ntlab.irisclient.viewmodels.RoomViewModel;
 
 import java.util.ArrayList;
@@ -44,7 +49,6 @@
 
 
 
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -101,6 +105,10 @@
                     Intent intent = new Intent(MemberRoomActivity.this,DrawingActivity.class);
                     startActivity(intent);
                 }
+
+                if(state == -1){
+                    roomDeleted(roomViewModel);
+                }
             }
         });
 
@@ -162,6 +170,7 @@
             @Override
             public void onClick(View v) {
 
+                homeButton(roomViewModel);
             }
         });
 
@@ -232,5 +241,50 @@
         }
     }
 
+    private void homeButton(RoomViewModel roomViewModel){
+        String strTitle = "ホーム画面に戻ってよろしいですか？";
+        String strMessage = "退出することになりますよ";
+
+        AlertDialog.Builder builder;
+        builder = new AlertDialog.Builder(this);
+        builder.setMessage(strMessage);
+        builder.setTitle(strTitle);
+        builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                roomViewModel.deleteMember(roomId , myName);
+                Intent intent = new Intent(MemberRoomActivity.this,MainActivity.class);
+                startActivity(intent);
+            }
+        });
+        builder.setNegativeButton("キャンセル", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+
+            }
+        });
+        builder.create();
+        builder.show();
+    }
+
+    private void roomDeleted(RoomViewModel roomViewModel){
+        String strTitle = "オーナーが退出しました";
+        String strMessage = "強制的に部屋を削除します";
+
+        AlertDialog.Builder builder;
+        builder = new AlertDialog.Builder(this);
+        builder.setMessage(strMessage);
+        builder.setTitle(strTitle);
+
+        builder.setNegativeButton("仕方ないなぁ", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                System.out.println("ホームへ戻される");
+            }
+        });
+        builder.create();
+        builder.show();
+    }
+
 
 }
\ No newline at end of file