diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 56c3abd..0a5abc1 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -34,6 +34,11 @@
             android:screenOrientation="landscape"
             android:exported="true" >
         </activity>
+        <activity
+            android:name=".OwnerRoomActivity"
+            android:screenOrientation="landscape"
+            android:exported="true" >
+        </activity>
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java b/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
index 19d8314..0892581 100644
--- a/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
@@ -3,7 +3,12 @@
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
 
+import android.content.Intent;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageButton;
 
 public class EnterRoomActivity extends AppCompatActivity {
 
@@ -17,5 +22,32 @@
             actionBar.hide();
         }
 
+        ImageButton imageButton = (ImageButton) findViewById(R.id.backButton); // view経由でimageButtonを探す
+        imageButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                Intent i = new Intent(v.getContext(), MainActivity.class);
+                startActivity(i);
+            }
+        });
+
+        Button nextButton = findViewById(R.id.EntryRoomButton);
+        EditText text0 = (EditText) findViewById(R.id.nicknameEditText);
+        EditText text1 = (EditText) findViewById(R.id.roomidEditText);
+        nextButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+
+                //ニックネームが入力されていない場合エラーメッセージを表示する
+                if (text0.getText().toString().isEmpty() || text1.getText().toString().isEmpty()) {
+                    text0.setError("ニックネームを入力されていません");
+                    text1.setError("部屋番号を入力されていません");
+
+                    //ニックネームが入力されていれば次の画面へ
+                } else {
+                    Intent intent = new Intent(EnterRoomActivity.this,OwnerRoomActivity.class);
+                    startActivity(intent);
+                }
+            }
+        });
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_enter_room.xml b/app/src/main/res/layout/activity_enter_room.xml
index cbbf45e..2256c75 100644
--- a/app/src/main/res/layout/activity_enter_room.xml
+++ b/app/src/main/res/layout/activity_enter_room.xml
@@ -74,4 +74,18 @@
         app:layout_constraintTop_toBottomOf="@+id/roomidTextView"
         app:layout_constraintVertical_bias="0.172" />
 
+    <ImageButton
+        android:id="@+id/backButton"
+        android:layout_width="45dp"
+        android:layout_height="44dp"
+        android:padding="0dp"
+        android:scaleType="fitCenter"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.037"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.043"
+        app:srcCompat="@drawable/backbottom" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file