diff --git a/app/src/main/java/cc/niushuai/didicheck/MainActivity.java b/app/src/main/java/cc/niushuai/didicheck/MainActivity.java
index fe71e3b..c268c9e 100644
--- a/app/src/main/java/cc/niushuai/didicheck/MainActivity.java
+++ b/app/src/main/java/cc/niushuai/didicheck/MainActivity.java
@@ -28,9 +28,9 @@ public class MainActivity extends AppCompatActivity {
         viewPager.setAdapter(sectionsPagerAdapter);
 
 
-        FloatingActionButton fab = binding.fab;
+        FloatingActionButton didiCheckBtn = binding.didiCheckBtn;
 
-        fab.setOnClickListener(new View.OnClickListener() {
+        didiCheckBtn.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 819c055..436e80d 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -13,11 +13,11 @@
         app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/fab"
+        android:id="@+id/didi_check_btn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
-        android:layout_marginEnd="@dimen/fab_margin"
+        android:layout_marginEnd="16dp"
         android:layout_marginBottom="16dp"
-        app:srcCompat="@android:drawable/ic_dialog_email" />
+        app:srcCompat="@android:drawable/ic_input_add" />
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file