diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index fb7f4a8..61a9130 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="1.8" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 27e91da..ee22109 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="NullableNotNullManager">
     <option name="myDefaultNullable" value="org.jetbrains.annotations.Nullable" />
     <option name="myDefaultNotNull" value="android.annotation.NonNull" />
@@ -68,7 +69,7 @@
       </profile-state>
     </entry>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="11" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 3b8a747..c49aa7d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,6 +27,7 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'androidx.appcompat:appcompat:1.0.2'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'com.google.android.material:material:1.4.+'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e9dc395..23e6adc 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -9,13 +9,17 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <activity
+            android:name=".IndexActivity"
+            android:exported="false" />
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".activity.RegisterActivity"></activity>
+        <activity android:name=".activity.RegisterActivity" />
         <activity android:name=".activity.UserActivity" />
         <activity android:name=".activity.CategoryActivity" />
     </application>
diff --git a/app/src/main/java/com/orangesale/cn/activity/IndexActivity.java b/app/src/main/java/com/orangesale/cn/activity/IndexActivity.java
new file mode 100644
index 0000000..7e81702
--- /dev/null
+++ b/app/src/main/java/com/orangesale/cn/activity/IndexActivity.java
@@ -0,0 +1,62 @@
+package com.orangesale.cn.activity;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.FragmentTransaction;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.LinearLayout;
+
+import com.orangesale.cn.R;
+
+public class IndexActivity extends Activity implements View.OnClickListener {
+   private LinearLayout indexLine;
+   //private ProductFragment productFragment;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_index);
+        init();
+        initIndexFragment();
+    }
+    //组件初始化
+    private void init(){
+
+    }
+
+    @Override
+    public void onClick(View v){
+        switch (v.getId()){
+
+
+        }
+    }
+
+    //初始化首页Fragment
+    private void initIndexFragment(){
+        /*
+        FragmentTransaction transaction=getFragmentManager().beginTransaction();
+        if(indexFragment==null){
+
+        }
+
+         */
+    }
+
+    //初始化产品fragment
+    private void initproductFragment(){
+
+    }
+
+    //初始化购物车fragment
+    private void initshoppingCarFragment(){
+
+    }
+
+    //初始化个人fragment
+    private void initpersonFragment(){
+
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/drawable/index.png b/app/src/main/res/drawable/index.png
new file mode 100644
index 0000000..cc1ec04
Binary files /dev/null and b/app/src/main/res/drawable/index.png differ
diff --git a/app/src/main/res/drawable/pearson.png b/app/src/main/res/drawable/pearson.png
new file mode 100644
index 0000000..90cf0eb
Binary files /dev/null and b/app/src/main/res/drawable/pearson.png differ
diff --git a/app/src/main/res/drawable/product.png b/app/src/main/res/drawable/product.png
new file mode 100644
index 0000000..8f5cb21
Binary files /dev/null and b/app/src/main/res/drawable/product.png differ
diff --git a/app/src/main/res/drawable/shoppingcart.png b/app/src/main/res/drawable/shoppingcart.png
new file mode 100644
index 0000000..76c06de
Binary files /dev/null and b/app/src/main/res/drawable/shoppingcart.png differ
diff --git a/app/src/main/res/layout/activity_index.xml b/app/src/main/res/layout/activity_index.xml
new file mode 100644
index 0000000..31dbee2
--- /dev/null
+++ b/app/src/main/res/layout/activity_index.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:orientation="vertical"
+    tools:context=".activity.IndexActivity">
+
+    <FrameLayout
+        android:id="@+id/main_content"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="70dp">
+        <!--底部导航-->
+        <include layout="@layout/content_nav" />
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/content_nav.xml b/app/src/main/res/layout/content_nav.xml
new file mode 100644
index 0000000..3f06d5b
--- /dev/null
+++ b/app/src/main/res/layout/content_nav.xml
@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <!--首页-->
+    <LinearLayout
+        android:id="@+id/content_index"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:orientation="vertical">
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="2dp"
+            android:src="@drawable/index" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="Index"
+            android:textColor="#000"
+            android:textSize="18sp" />
+    </LinearLayout>
+    <!--间隔线-->
+    <ImageView
+        android:layout_width="1dp"
+        android:layout_height="70dp"
+        android:background="#CFCFCF" />
+    <!--商品-->
+    <LinearLayout
+        android:id="@+id/content_product"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:orientation="vertical">
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="2dp"
+            android:src="@drawable/product" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="goods"
+            android:textColor="#000"
+            android:textSize="18sp" />
+    </LinearLayout>
+
+    <!--间隔线-->
+    <ImageView
+        android:layout_width="1dp"
+        android:layout_height="70dp"
+        android:background="#CFCFCF" />
+    <!--购物车-->
+    <LinearLayout
+        android:id="@+id/content_cart"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginTop="2dp"
+        android:orientation="vertical">
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:src="@drawable/shoppingcart" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="cart"
+            android:textColor="#000"
+            android:textSize="18sp" />
+    </LinearLayout>
+
+    <!--间隔线-->
+    <ImageView
+        android:layout_width="1dp"
+        android:layout_height="70dp"
+        android:background="#CFCFCF" />
+
+    <!--个人-->
+    <LinearLayout
+        android:id="@+id/content_pearson"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginTop="2dp"
+        android:orientation="vertical">
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:src="@drawable/pearson" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="Me"
+            android:textColor="#000"
+            android:textSize="18sp" />
+    </LinearLayout>
+
+
+</LinearLayout>
\ No newline at end of file