diff --git a/app/src/main/java/com/idormy/sms/forwarder/MainActivity.java b/app/src/main/java/com/idormy/sms/forwarder/MainActivity.java
index b7d349cd..f30709a9 100644
--- a/app/src/main/java/com/idormy/sms/forwarder/MainActivity.java
+++ b/app/src/main/java/com/idormy/sms/forwarder/MainActivity.java
@@ -17,6 +17,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.Window;
+import android.view.WindowManager;
 import android.widget.RadioButton;
 import android.widget.RadioGroup;
 import android.widget.TextView;
@@ -539,6 +540,12 @@ public class MainActivity extends AppCompatActivity implements RefreshListView.I
         Window dialogWindow = dialog.getWindow();
         dialogWindow.setGravity(Gravity.CENTER);
 
+        //自适应大小
+        WindowManager.LayoutParams dialogParams = dialogWindow.getAttributes();
+        dialogParams.width = (int) (context.getResources().getDisplayMetrics().widthPixels * 0.85);
+        //dialogParams.height = (int) (context.getResources().getDisplayMetrics().heightPixels * 0.7);
+        dialogWindow.setAttributes(dialogParams);
+
         dialog.setCancelable(false);
         dialog.show();
     }
diff --git a/app/src/main/res/layout/diaolog_privacy_policy.xml b/app/src/main/res/layout/diaolog_privacy_policy.xml
index 4754290c..7b264e0c 100644
--- a/app/src/main/res/layout/diaolog_privacy_policy.xml
+++ b/app/src/main/res/layout/diaolog_privacy_policy.xml
@@ -1,74 +1,77 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_marginStart="20dp"
-    android:layout_marginEnd="20dp"
-    android:background="#fff"
-    android:orientation="vertical"
-    tools:ignore="Overdraw">
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
-        android:layout_marginTop="10dp"
-        android:layout_marginBottom="10dp"
-        android:text="@string/privacy_policy"
-        android:textColor="#000"
-        android:textSize="17sp" />
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginStart="5dp"
-        android:layout_marginEnd="5dp"
-        android:layout_marginBottom="10dp"
-        android:text="@string/privacy_policy_text"
-        android:textColor="#000"
-        android:textSize="17sp" />
+    android:layout_height="match_parent">
 
     <LinearLayout
-        android:layout_width="wrap_content"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="vertical">
+        android:background="#fff"
+        android:orientation="vertical"
+        tools:ignore="Overdraw">
 
-        <View
-            android:layout_width="match_parent"
-            android:layout_height="1dp"
-            android:background="#514E4E" />
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal"
+            android:layout_marginTop="10dp"
+            android:layout_marginBottom="10dp"
+            android:text="@string/privacy_policy"
+            android:textColor="#000"
+            android:textSize="17sp" />
 
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="50dp"
-            android:orientation="horizontal">
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="5dp"
+            android:layout_marginEnd="5dp"
+            android:layout_marginBottom="10dp"
+            android:text="@string/privacy_policy_text"
+            android:textColor="#000"
+            android:textSize="17sp" />
 
-            <TextView
-                android:id="@+id/succsebtn"
-                android:layout_width="0dp"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:gravity="center"
-                android:text="@string/agree"
-                android:textColor="#000"
-                android:textSize="20sp" />
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
 
             <View
-                android:layout_width="0.5dp"
-                android:layout_height="match_parent"
-                android:background="#5F6063" />
+                android:layout_width="match_parent"
+                android:layout_height="1dp"
+                android:background="#514E4E" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="50dp"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:id="@+id/succsebtn"
+                    android:layout_width="0dp"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:text="@string/agree"
+                    android:textColor="#000"
+                    android:textSize="20sp" />
+
+                <View
+                    android:layout_width="0.5dp"
+                    android:layout_height="match_parent"
+                    android:background="#5F6063" />
 
-            <TextView
-                android:id="@+id/caclebtn"
-                android:layout_width="0dp"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:gravity="center"
-                android:text="@string/disagree"
-                android:textColor="#000"
-                android:textSize="20sp" />
+                <TextView
+                    android:id="@+id/caclebtn"
+                    android:layout_width="0dp"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:text="@string/disagree"
+                    android:textColor="#000"
+                    android:textSize="20sp" />
 
+            </LinearLayout>
         </LinearLayout>
     </LinearLayout>
-</LinearLayout>
\ No newline at end of file
+</ScrollView>
\ No newline at end of file