diff --git a/lib/src/main/java/com/king/zxing/DefaultCameraScan.java b/lib/src/main/java/com/king/zxing/DefaultCameraScan.java
index ba10408..466a8df 100644
--- a/lib/src/main/java/com/king/zxing/DefaultCameraScan.java
+++ b/lib/src/main/java/com/king/zxing/DefaultCameraScan.java
@@ -155,9 +155,19 @@ public class DefaultCameraScan extends CameraScan {
         LogUtils.d(String.format("screenSize: %d * %d",mScreenWidth,mScreenHeight));
         //因为为了保持流畅性和性能，限制在1080p，在此前提下尽可能的找到屏幕接近的分辨率
         if(mScreenWidth < mScreenHeight){
-            mTargetSize = new Size(mScreenWidth,mScreenWidth / 9 * 16);
+            float ratio =  mScreenWidth / (float)mScreenHeight;
+            if(ratio > 0.7){//一般应用于平板
+                mTargetSize = new Size(mScreenWidth,mScreenWidth / 3 * 4);
+            }else{
+                mTargetSize = new Size(mScreenWidth,mScreenWidth / 9 * 16);
+            }
         }else{
-            mTargetSize = new Size(mScreenHeight / 9 * 16, mScreenHeight);
+            float ratio = mScreenHeight / (float)mScreenWidth;
+            if(ratio > 0.7){//一般应用于平板
+                mTargetSize = new Size(mScreenHeight / 3 * 4, mScreenHeight);
+            }else{
+                mTargetSize = new Size(mScreenHeight / 9 * 16, mScreenHeight);
+            }
         }
 
         mBeepManager = new BeepManager(mContext);
@@ -237,7 +247,8 @@ public class DefaultCameraScan extends CameraScan {
         mCameraProviderFuture.addListener(() -> {
 
             try{
-                Preview preview = mCameraConfig.options(new Preview.Builder());
+                Preview preview = mCameraConfig.options(new Preview.Builder()
+                        .setTargetResolution(mTargetSize));
 
                 //相机选择器
                 CameraSelector cameraSelector = mCameraConfig.options(new CameraSelector.Builder());
diff --git a/lib/src/main/java/com/king/zxing/analyze/AreaRectAnalyzer.java b/lib/src/main/java/com/king/zxing/analyze/AreaRectAnalyzer.java
index 6024cc5..9370b44 100644
--- a/lib/src/main/java/com/king/zxing/analyze/AreaRectAnalyzer.java
+++ b/lib/src/main/java/com/king/zxing/analyze/AreaRectAnalyzer.java
@@ -41,7 +41,6 @@ public abstract class AreaRectAnalyzer extends ImageAnalyzer {
     @Nullable
     @Override
     public Result analyze(byte[] data, int width, int height) {
-        LogUtils.d(String.format("width:%d, height:%d",width,height));
         if(mDecodeConfig != null){
             if(mDecodeConfig.isFullAreaScan()){
                 //mDecodeConfig为空或者支持全区域扫码识别时，直接使用全区域进行扫码识别