diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 0c1ac68..6fb732b 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -6,16 +6,7 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="6eee3eb5-c6d1-4314-bc74-252c24619d77" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/android/libs/LPAPI-2019-11-20-R.jar" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/build.gradle" beforeDir="false" afterPath="$PROJECT_DIR$/android/build.gradle" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/libs/DzPrinter-2017-06-16.jar" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/src/main/AndroidManifest.xml" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/AndroidManifest.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/FlutterBtPrinterPlugin.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/FlutterBtPrinterPlugin.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/utils/PrintUtil.java" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/example/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/example/lib/main.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/flutter_bt_printer.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/flutter_bt_printer.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/.dart_tool/" />
     <ignored path="$PROJECT_DIR$/.idea/" />
@@ -38,8 +29,8 @@
       <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/example/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="348">
-              <caret line="37" column="40" selection-start-line="37" selection-start-column="40" selection-end-line="37" selection-end-column="40" />
+            <state relative-caret-position="433">
+              <caret line="42" column="34" selection-start-line="42" selection-start-column="34" selection-end-line="42" selection-end-column="34" />
               <folding>
                 <element signature="e#0#39#0" expanded="true" />
               </folding>
@@ -291,8 +282,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/example/lib/main.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="348">
-          <caret line="37" column="40" selection-start-line="37" selection-start-column="40" selection-end-line="37" selection-end-column="40" />
+        <state relative-caret-position="433">
+          <caret line="42" column="34" selection-start-line="42" selection-start-column="34" selection-end-line="42" selection-end-column="34" />
           <folding>
             <element signature="e#0#39#0" expanded="true" />
           </folding>
diff --git a/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java b/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java
index b840506..44a865d 100644
--- a/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java
+++ b/android/src/main/java/com/jvtd/flutter_bt_printer/utils/LPUtil.java
@@ -247,19 +247,20 @@ private boolean printCustom(String topTitle, String bottomTitle, String qrCode,
     double lVerLen = 38;// 线纵向长度
     double lWidth = 0.2;// 线宽度
     double cVerLen = 7.6;// 单元格纵向长度
-    double cHorLen = 18;// 单元格横向宽度
+    double cHorLen = 17;// 单元格横向宽度
     double qrCodeHorLen = cVerLen * 3;
+    double startPos = 0.2;
 
     // 开始绘图任务，传入参数(页面宽度, 页面高度)
     api.startJob(lHorLen, lVerLen, 90);
     api.setItemHorizontalAlignment(IAtBitmap.ItemAlignment.CENTER);
     api.setItemVerticalAlignment(IAtBitmap.ItemAlignment.CENTER);
 
-    api.drawRectangle(0, 0, lHorLen, lVerLen, lWidth);
+    api.drawRoundRectangle(startPos, 0, lHorLen, lVerLen, 1, 1, 0.3);
 
     // 画横线
-    api.drawLine(0, cVerLen, lHorLen, cVerLen, lWidth);
-    api.drawLine(0, lVerLen - cVerLen, lHorLen, lVerLen - cVerLen, lWidth);
+    api.drawLine(startPos, cVerLen, lHorLen, cVerLen, lWidth);
+    api.drawLine(startPos, lVerLen - cVerLen, lHorLen, lVerLen - cVerLen, lWidth);
     api.drawLine(qrCodeHorLen, 2 * cVerLen, lHorLen, 2 * cVerLen, lWidth);
     api.drawLine(qrCodeHorLen, 3 * cVerLen, lHorLen, 3 * cVerLen, lWidth);
     // 画竖线
@@ -267,7 +268,7 @@ private boolean printCustom(String topTitle, String bottomTitle, String qrCode,
     api.drawLine(qrCodeHorLen + cHorLen, cVerLen, qrCodeHorLen + cHorLen, lVerLen - cVerLen, lWidth);
 
     api.drawText(topTitle, 0, 0, lHorLen, cVerLen, 3.2);
-    api.draw2DQRCode(qrCode, 2, cVerLen + 2, cHorLen);
+    api.draw2DQRCode(qrCode, 2.5, cVerLen + 2.5, 18);
 
     api.drawText(label1Title, qrCodeHorLen, cVerLen, cHorLen, cVerLen, 2.5);
     api.drawText(label1Value, qrCodeHorLen + cHorLen, cVerLen, cHorLen, cVerLen, 2.5);