diff --git a/src/main/java/com/dreamworks/boditech/controller/DeviceController.java b/src/main/java/com/dreamworks/boditech/controller/DeviceController.java
index 8c97881..b7a3df0 100644
--- a/src/main/java/com/dreamworks/boditech/controller/DeviceController.java
+++ b/src/main/java/com/dreamworks/boditech/controller/DeviceController.java
@@ -29,6 +29,13 @@ public class DeviceController extends BaseController {
         return this.success();
     }
 
+    @ResponseBody
+    @PostMapping("/api/device/unload")
+    public ApiResponse unload() {
+        this.deviceService.unload();
+        return this.success();
+    }
+
 
 
 
@@ -274,11 +281,7 @@ public class DeviceController extends BaseController {
 
 
 
-    @ResponseBody
-    @PostMapping("/api/device/unload")
-    public ApiResponse unload() {
-        return this.success();
-    }
+
 
     @ResponseBody
     @PostMapping("/api/device/trash-box-status-get")
diff --git a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmBufferTubeManager.java b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmBufferTubeManager.java
index dba6913..75b1fda 100644
--- a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmBufferTubeManager.java
+++ b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmBufferTubeManager.java
@@ -37,6 +37,16 @@ public class CsmBufferTubeManager {
         box.tubeAmount = param.tubeAmount;
     }
 
+    // clear all test cards
+    public void clear() {
+        this.bufferTubeBoxes.clear();
+        for ( int i=0; i<6; i++ ) {
+            CsmBufferTubeBox box = new CsmBufferTubeBox();
+            box.index = i;
+            this.bufferTubeBoxes.add(box);
+        }
+    }
+
     /**
      * append buffer tube by box code string
      * code example : 01CAGGB66U
diff --git a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmLargeBufferTubeManager.java b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmLargeBufferTubeManager.java
index 310ef72..22a29d8 100644
--- a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmLargeBufferTubeManager.java
+++ b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmLargeBufferTubeManager.java
@@ -31,6 +31,16 @@ public class CsmLargeBufferTubeManager {
         return this.device;
     }
 
+    // clear all test cards
+    public void clear() {
+        this.largeBufferTubes.clear();
+        for ( int i=0; i<6; i++ ) {
+            CsmLargeBufferTube tube = new CsmLargeBufferTube(this);
+            tube.index = i;
+            this.largeBufferTubes.add(tube);
+        }
+    }
+
     /**
      * append large buffer tube by box code string
      * code example : 01CAGGB66U
diff --git a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmTestCardManager.java b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmTestCardManager.java
index 7acb8e1..0055e96 100644
--- a/src/main/java/com/dreamworks/boditech/driver/consumable/CsmTestCardManager.java
+++ b/src/main/java/com/dreamworks/boditech/driver/consumable/CsmTestCardManager.java
@@ -31,6 +31,16 @@ public class CsmTestCardManager {
         return this.testCardBoxes;
     }
 
+    // clear all test cards
+    public void clear() {
+        this.testCardBoxes.clear();
+        for ( int i=0; i<6; i++ ) {
+            CsmTestCardBox box = new CsmTestCardBox();
+            box.index = i;
+            this.testCardBoxes.add(box);
+        }
+    }
+
     /**
      * update test cards by box
      * @param update update info
@@ -83,6 +93,19 @@ public class CsmTestCardManager {
 
 
 
+
+
+
+
+
+
+
+
+
+
+
+
+
     // @TODO : 删除下面这个属性，使用box代替
     // list of test cards
     private final List<CsmTestCard> testCards = new ArrayList<>();
diff --git a/src/main/java/com/dreamworks/boditech/service/DeviceService.java b/src/main/java/com/dreamworks/boditech/service/DeviceService.java
index 9ccb801..f35779b 100644
--- a/src/main/java/com/dreamworks/boditech/service/DeviceService.java
+++ b/src/main/java/com/dreamworks/boditech/service/DeviceService.java
@@ -47,6 +47,25 @@ public class DeviceService {
     }
 
     /**
+     * unload consumable resources
+     */
+    public void unload() {
+        if ( this.isExecutorRunning() ) {
+            throw new RuntimeException("DEVICE_STILL_RUNNING");
+        }
+        this.actionLog.log("device.unload");
+        this.device.testCards.clear();
+        this.device.bufferTubes.clear();
+        this.device.largeBufferTubes.clear();
+    }
+
+
+
+
+
+
+
+    /**
      * 复位设备， 如果设备未正常复位， 需要给个警告弹框，然后再执行错误复位
      * @throws RuntimeException 设备未正常复位
      */