diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 1653625..7d7607b 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,6 +14,15 @@
         android:theme="@style/Theme.CitrusClient"
         tools:targetApi="31">
         <activity
+            android:name=".views.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
             android:name=".views.MyBookshelfActivity"
             android:exported="true">
             <intent-filter>
diff --git a/app/src/main/java/com/example/citrusclient/views/MainActivity.java b/app/src/main/java/com/example/citrusclient/views/MainActivity.java
new file mode 100644
index 0000000..a7b9e81
--- /dev/null
+++ b/app/src/main/java/com/example/citrusclient/views/MainActivity.java
@@ -0,0 +1,63 @@
+package com.example.citrusclient.views;
+
+import android.os.Bundle;
+import android.view.MenuItem;
+
+import androidx.activity.EdgeToEdge;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.fragment.app.Fragment;
+
+import com.example.citrusclient.R;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import com.google.android.material.navigation.NavigationBarView;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_main);
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+
+        setNavViewEvent();
+
+    }
+
+    private void showFragment(Fragment fragment){
+        getSupportFragmentManager().beginTransaction()
+                .replace(R.id.fragment_container, fragment)
+                .addToBackStack(null)
+                .commit();
+    }
+
+    private void setNavViewEvent(){
+        BottomNavigationView navView = findViewById(R.id.bottomNavigationView);
+        navView.setOnItemSelectedListener(new NavigationBarView.OnItemSelectedListener() {
+            @Override
+            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
+                int itemId = menuItem.getItemId();
+                if(itemId == R.id.book){// 本棚
+                    showFragment(new MyBookshelfFragment());
+                } else if(itemId == R.id.search){//検索
+
+                } else if(itemId == R.id.home){//ホーム
+
+                }else if(itemId == R.id.calendar){ //カレンダ
+
+                }else if(itemId == R.id.face){//マイページ
+
+                }
+                return true;
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/citrusclient/views/MyBookshelfActivity.java b/app/src/main/java/com/example/citrusclient/views/MyBookshelfActivity.java
deleted file mode 100644
index 981023b..0000000
--- a/app/src/main/java/com/example/citrusclient/views/MyBookshelfActivity.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.example.citrusclient.views;
-
-import android.os.Bundle;
-
-import androidx.activity.EdgeToEdge;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
-
-import com.example.citrusclient.R;
-
-public class MyBookshelfActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        EdgeToEdge.enable(this);
-        setContentView(R.layout.activity_my_bookshelf);
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
-            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
-            return insets;
-        });
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java b/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java
new file mode 100644
index 0000000..36d1f65
--- /dev/null
+++ b/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java
@@ -0,0 +1,66 @@
+package com.example.citrusclient.views;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.example.citrusclient.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link MyBookshelfFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class MyBookshelfFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public MyBookshelfFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment MyBookshelfFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static MyBookshelfFragment newInstance(String param1, String param2) {
+        MyBookshelfFragment fragment = new MyBookshelfFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_my_bookshelf_fragment, container, false);
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/drawable/baseline_calendar_month_24.xml b/app/src/main/res/drawable/baseline_calendar_month_24.xml
new file mode 100644
index 0000000..2a703af
--- /dev/null
+++ b/app/src/main/res/drawable/baseline_calendar_month_24.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M19,4h-1V2h-2v2H8V2H6v2H5C3.89,4 3.01,4.9 3.01,6L3,20c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2V6C21,4.9 20.1,4 19,4zM19,20H5V10h14V20zM9,14H7v-2h2V14zM13,14h-2v-2h2V14zM17,14h-2v-2h2V14zM9,18H7v-2h2V18zM13,18h-2v-2h2V18zM17,18h-2v-2h2V18z"/>
+    
+</vector>
diff --git a/app/src/main/res/drawable/baseline_face_24.xml b/app/src/main/res/drawable/baseline_face_24.xml
new file mode 100644
index 0000000..665f371
--- /dev/null
+++ b/app/src/main/res/drawable/baseline_face_24.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M9,11.75c-0.69,0 -1.25,0.56 -1.25,1.25s0.56,1.25 1.25,1.25 1.25,-0.56 1.25,-1.25 -0.56,-1.25 -1.25,-1.25zM15,11.75c-0.69,0 -1.25,0.56 -1.25,1.25s0.56,1.25 1.25,1.25 1.25,-0.56 1.25,-1.25 -0.56,-1.25 -1.25,-1.25zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8 0,-0.29 0.02,-0.58 0.05,-0.86 2.36,-1.05 4.23,-2.98 5.21,-5.37C11.07,8.33 14.05,10 17.42,10c0.78,0 1.53,-0.09 2.25,-0.26 0.21,0.71 0.33,1.47 0.33,2.26 0,4.41 -3.59,8 -8,8z"/>
+    
+</vector>
diff --git a/app/src/main/res/drawable/baseline_home_24.xml b/app/src/main/res/drawable/baseline_home_24.xml
new file mode 100644
index 0000000..20cb4d6
--- /dev/null
+++ b/app/src/main/res/drawable/baseline_home_24.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z"/>
+    
+</vector>
diff --git a/app/src/main/res/drawable/baseline_menu_book_24.xml b/app/src/main/res/drawable/baseline_menu_book_24.xml
new file mode 100644
index 0000000..10d9f76
--- /dev/null
+++ b/app/src/main/res/drawable/baseline_menu_book_24.xml
@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M21,5c-1.11,-0.35 -2.33,-0.5 -3.5,-0.5c-1.95,0 -4.05,0.4 -5.5,1.5c-1.45,-1.1 -3.55,-1.5 -5.5,-1.5S2.45,4.9 1,6v14.65c0,0.25 0.25,0.5 0.5,0.5c0.1,0 0.15,-0.05 0.25,-0.05C3.1,20.45 5.05,20 6.5,20c1.95,0 4.05,0.4 5.5,1.5c1.35,-0.85 3.8,-1.5 5.5,-1.5c1.65,0 3.35,0.3 4.75,1.05c0.1,0.05 0.15,0.05 0.25,0.05c0.25,0 0.5,-0.25 0.5,-0.5V6C22.4,5.55 21.75,5.25 21,5zM21,18.5c-1.1,-0.35 -2.3,-0.5 -3.5,-0.5c-1.7,0 -4.15,0.65 -5.5,1.5V8c1.35,-0.85 3.8,-1.5 5.5,-1.5c1.2,0 2.4,0.15 3.5,0.5V18.5z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17.5,10.5c0.88,0 1.73,0.09 2.5,0.26V9.24C19.21,9.09 18.36,9 17.5,9c-1.7,0 -3.24,0.29 -4.5,0.83v1.66C14.13,10.85 15.7,10.5 17.5,10.5z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M13,12.49v1.66c1.13,-0.64 2.7,-0.99 4.5,-0.99c0.88,0 1.73,0.09 2.5,0.26V11.9c-0.79,-0.15 -1.64,-0.24 -2.5,-0.24C15.8,11.66 14.26,11.96 13,12.49z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17.5,14.33c-1.7,0 -3.24,0.29 -4.5,0.83v1.66c1.13,-0.64 2.7,-0.99 4.5,-0.99c0.88,0 1.73,0.09 2.5,0.26v-1.52C19.21,14.41 18.36,14.33 17.5,14.33z"/>
+    
+</vector>
diff --git a/app/src/main/res/drawable/baseline_search_24.xml b/app/src/main/res/drawable/baseline_search_24.xml
new file mode 100644
index 0000000..d29c6ea
--- /dev/null
+++ b/app/src/main/res/drawable/baseline_search_24.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
+    
+</vector>
diff --git a/app/src/main/res/drawable/bottom_navigation_item_state.xml b/app/src/main/res/drawable/bottom_navigation_item_state.xml
new file mode 100644
index 0000000..5c4ae3d
--- /dev/null
+++ b/app/src/main/res/drawable/bottom_navigation_item_state.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- チェック状態 -->
+    <item android:color="?colorAccent" android:state_checked="true"/>
+    <!-- タップしたとき -->
+    <item android:color="?colorPrimaryDark" android:state_pressed="true"/>
+    <!-- 通常 -->
+    <item android:color="#FFFFFF"/>
+</selector>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..82849ee
--- /dev/null
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".views.MainActivity">
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/bottomNavigationView"
+        android:layout_width="415dp"
+        android:layout_height="77dp"
+        android:layout_gravity="bottom"
+        android:background="#BAE4C3"
+        app:itemIconSize="30dp"
+        app:itemIconTint="@drawable/bottom_navigation_item_state"
+        app:itemPadding="0dp"
+        app:itemTextAppearanceActiveBoldEnabled="false"
+        app:itemTextColor="@drawable/bottom_navigation_item_state"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="1.0"
+        app:menu="@menu/bottom_navigation_item" />
+
+    <FrameLayout
+        android:id="@+id/fragment_container"
+        android:layout_width="409dp"
+        android:layout_height="652dp"
+        android:layout_marginBottom="2dp"
+        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+    </FrameLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_my_bookshelf.xml b/app/src/main/res/layout/activity_my_bookshelf.xml
deleted file mode 100644
index 932b169..0000000
--- a/app/src/main/res/layout/activity_my_bookshelf.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/main"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".views.MyBookshelfActivity">
-
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_my_bookshelf_fragment.xml b/app/src/main/res/layout/fragment_my_bookshelf_fragment.xml
new file mode 100644
index 0000000..1780898
--- /dev/null
+++ b/app/src/main/res/layout/fragment_my_bookshelf_fragment.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".views.MyBookshelfFragment">
+
+    <TextView
+        android:id="@+id/textView3"
+        android:layout_width="345dp"
+        android:layout_height="229dp"
+        android:text="TextView"
+        android:textSize="50sp" />
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/bottom_navigation_item.xml b/app/src/main/res/menu/bottom_navigation_item.xml
new file mode 100644
index 0000000..99e29fb
--- /dev/null
+++ b/app/src/main/res/menu/bottom_navigation_item.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/book"
+        android:icon="@drawable/baseline_menu_book_24"
+        android:title="book"/>
+    <item
+        android:id="@+id/search"
+        android:icon="@drawable/baseline_search_24"
+        android:title="search"/>
+    <item
+        android:id="@+id/home"
+        android:icon="@drawable/baseline_home_24"
+        android:title="home"/>
+    <item
+        android:id="@+id/calendar"
+        android:icon="@drawable/baseline_calendar_month_24"
+        android:title="calendar"/>
+    <item
+        android:id="@+id/face"
+        android:icon="@drawable/baseline_face_24"
+        android:title="mypage"/>
+
+</menu>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index aa34252..934a76e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,5 @@
 <resources>
     <string name="app_name">CitrusClient</string>
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
 </resources>
\ No newline at end of file