diff --git a/.idea/misc.xml b/.idea/misc.xml
index 3a2ab9b..5dfb9c6 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -3,15 +3,22 @@
   <component name="DesignSurface">
     <option name="filePathToZoomLevelMap">
       <map>
-        <entry key="..\:/Users/Student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_home.xml" value="0.1" />
-        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_main.xml" value="0.17831813576494426" />
-        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_paint.xml" value="0.3605072463768116" />
-        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_edit.xml" value="0.3605072463768116" />
-        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/menu/bottom_nav_menu.xml" value="0.36666666666666664" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_animation.xml" value="0.1884498480243161" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_main.xml" value="0.25" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_paint.xml" value="0.22" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/activity_sign_up.xml" value="0.22" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/animation_home.xml" value="0.1" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_create.xml" value="0.1" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_edit.xml" value="0.1" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_mypage.xml" value="0.1" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_pen.xml" value="0.1884498480243161" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/layout/fragment_search.xml" value="0.1" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/menu/bottom_nav_menu.xml" value="0.25" />
+        <entry key="..\:/Users/student/StudioProjects/org.ntlab.acanthus_client/app/src/main/res/menu/bottom_nav_paint.xml" value="0.25" />
       </map>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
index d213476..cccca2b 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
@@ -1,17 +1,22 @@
 package org.ntlab.acanthus_client.views.paint;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.view.MenuItem;
 import android.view.View;
 import android.widget.TextView;
 
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+
 import org.ntlab.acanthus_client.Acanthus;
 import org.ntlab.acanthus_client.R;
 import org.ntlab.acanthus_client.databinding.ActivityPaintBinding;
+import org.ntlab.acanthus_client.views.MainActivity;
 
 //-----------------------------------------------------------------
 // 描画ページ
@@ -20,6 +25,24 @@
     private PaintCanvas paintCanvas;
     private ActivityPaintBinding binding;
     private PaintViewModel paintViewModel;
+    private BottomNavigationView.OnNavigationItemReselectedListener onNavigationItemReselectedListener
+            = new BottomNavigationView.OnNavigationItemReselectedListener() {
+        @Override
+        public void onNavigationItemReselected(@NonNull MenuItem item) {
+            switch (item.getItemId()) {
+                case R.id.navigation_pen:
+                    break;
+
+                case R.id.navigation_clear:
+                    break;
+
+                case R.id.navigation_invite:
+                    transitionInviteActivity();
+                    break;
+
+            }
+        }
+    };
 
     //-----------------------------------------------------------------
     //-----------------------------------------------------------------
@@ -74,6 +97,8 @@
         paintViewModel.init(acanthus);
 
         startObserve();
+
+
     }
 
     //-----------------------------------------------------------------
@@ -85,7 +110,8 @@
         paintCanvas = (PaintCanvas) findViewById(R.id.myCanvas);
         paintCanvas.setPaintViewModel(paintViewModel);
 
-
+        BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navPaint);
+        navigation.setOnNavigationItemReselectedListener(onNavigationItemReselectedListener);
     }
 
     //-----------------------------------------------------------------
diff --git a/app/src/main/res/layout/activity_paint.xml b/app/src/main/res/layout/activity_paint.xml
index abcf863..b799275 100644
--- a/app/src/main/res/layout/activity_paint.xml
+++ b/app/src/main/res/layout/activity_paint.xml
@@ -10,11 +10,13 @@
 
     <org.ntlab.acanthus_client.views.paint.PaintCanvas
         android:id="@+id/myCanvas"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_width="411dp"
+        android:layout_height="674dp"
         android:layout_weight="1"
-        tools:layout_editor_absoluteX="133dp"
-        tools:layout_editor_absoluteY="16dp" />
+        app:layout_constraintBottom_toTopOf="@+id/navPaint"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <Button
         android:id="@+id/button_clear"
@@ -23,7 +25,9 @@
         android:onClick="onClickClear"
         android:text="clear"
         app:layout_constraintBottom_toBottomOf="@+id/myCanvas"
-        app:layout_constraintEnd_toEndOf="parent" />
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent" />
 
     <Button
         android:id="@+id/button_Invite"
@@ -70,5 +74,16 @@
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_bias="0.213" />
 
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/navPaint"
+        android:layout_width="410dp"
+        android:layout_height="54dp"
+        android:background="#FFFFFF"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:labelVisibilityMode="labeled"
+        app:menu="@menu/bottom_nav_paint" />
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/bottom_nav_paint.xml b/app/src/main/res/menu/bottom_nav_paint.xml
new file mode 100644
index 0000000..f59c79c
--- /dev/null
+++ b/app/src/main/res/menu/bottom_nav_paint.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_pen"
+        android:icon="@android:drawable/ic_menu_edit"
+        android:title="pen" />
+    <item
+        android:id="@+id/navigation_clear"
+        android:icon="@android:drawable/ic_menu_close_clear_cancel"
+        android:title="clear" />
+    <item
+        android:id="@+id/navigation_invite"
+        android:icon="@android:drawable/ic_menu_myplaces"
+        android:title="invite" />
+    <item
+        android:id="@+id/navigation_page"
+        android:icon="?attr/actionModeCopyDrawable"
+        android:title="page" />
+</menu>
\ No newline at end of file