diff --git a/src/main/java/com/dispose/mapper/TaskInfoMapper.java b/src/main/java/com/dispose/mapper/TaskInfoMapper.java
index 34559854..0bb2ec0a 100644
--- a/src/main/java/com/dispose/mapper/TaskInfoMapper.java
+++ b/src/main/java/com/dispose/mapper/TaskInfoMapper.java
@@ -61,4 +61,11 @@ public interface TaskInfoMapper extends Mapper<TaskInfo>, MySqlMapper<TaskInfo>
      * @return the task info current status
      */
     int getTaskInfoCurrentStatus(Long id);
+
+    /**
+     * Remove task by id.
+     *
+     * @param id the id
+     */
+    void removeTaskInfoById(Long id);
 }
diff --git a/src/main/java/com/dispose/service/impl/DisposeNodeManagerImpl.java b/src/main/java/com/dispose/service/impl/DisposeNodeManagerImpl.java
index 5bb1e6fc..f0d9bc0c 100644
--- a/src/main/java/com/dispose/service/impl/DisposeNodeManagerImpl.java
+++ b/src/main/java/com/dispose/service/impl/DisposeNodeManagerImpl.java
@@ -6,6 +6,7 @@ import com.dispose.common.IPAddrType;
 import com.dispose.dispose.DeviceRouter;
 import com.dispose.dispose.DisposeEntryManager;
 import com.dispose.mapper.DisposeDeviceMapper;
+import com.dispose.mapper.TaskInfoMapper;
 import com.dispose.pojo.entity.DisposeDevice;
 import com.dispose.pojo.po.DisposeDeviceCapacity;
 import com.dispose.pojo.po.MulReturnType;
@@ -35,6 +36,8 @@ public class DisposeNodeManagerImpl implements DisposeNodeManager {
     private DisposeDeviceMapper disposeDeviceMapper;
     @Resource
     private UserAccountService userAccountService;
+    @Resource
+    private  TaskInfoMapper taskInfoMapper;
 
     /**
      * Cleanup dispose node cache.
@@ -120,6 +123,9 @@ public class DisposeNodeManagerImpl implements DisposeNodeManager {
             return ErrorCode.ERR_NOSUCHDEVICE;
         }
 
+        //删除task info表中的任务
+        taskInfoMapper.removeTaskInfoById(dev.getId());
+
         // 删除数据库和缓存中内容
         disposeDeviceMapper.delDisposeDeviceByIp(ipAddr);
         disposeDevMap.remove(ipAddr);
@@ -146,7 +152,7 @@ public class DisposeNodeManagerImpl implements DisposeNodeManager {
 
         try {
             // 获取处置设备硬件访问接口
-            dp = DeviceRouter.getDeviceRouterFactory(dev.getType(), dev.getIpAddr());
+            dp = DeviceRouter.deviceRouterFactory(dev);
 
             // 判断设备是否在线
             if (!dp.getDeviceLinkStatus()) {
diff --git a/src/main/resources/mappers/TaskInfoMapper.xml b/src/main/resources/mappers/TaskInfoMapper.xml
index 687a9dcc..718412bd 100644
--- a/src/main/resources/mappers/TaskInfoMapper.xml
+++ b/src/main/resources/mappers/TaskInfoMapper.xml
@@ -34,4 +34,11 @@
         WHERE id = #{id, jdbcType=INTEGER}
     </select>
 
+    <delete id="removeTaskInfoById" parameterType="java.lang.Long">
+        DELETE
+            task_info
+        FROM task_info
+        WHERE task_info.deviceId = #{deviceId}
+    </delete>
+
 </mapper>