diff --git a/src/main/java/com/iflytop/a800/device/Device.java b/src/main/java/com/iflytop/a800/device/Device.java
index 142a7aa..d328524 100644
--- a/src/main/java/com/iflytop/a800/device/Device.java
+++ b/src/main/java/com/iflytop/a800/device/Device.java
@@ -1,9 +1,7 @@
 package com.iflytop.a800.device;
-
 import com.iflytop.a800.resource.BufferTubeManager;
 import com.iflytop.a800.resource.LargeBufferTubeManager;
 import com.iflytop.a800.resource.TestCardManager;
-
 public class Device {
     // singleton instance
     private static final Device instance = new Device();
@@ -25,6 +23,8 @@ public class Device {
     public final TrashBox trashBox = new TrashBox();
     // id卡读卡器
     public final IdChipReader idChipReader = new IdChipReader();
+    // 打印机
+    public final Printer printer = new Printer();
 
     // get instance
     public static Device getInstance() {