diff --git a/a8/timer_attacher.cc b/a8/timer_attacher.cc
index 48a2728..c3dd76b 100644
--- a/a8/timer_attacher.cc
+++ b/a8/timer_attacher.cc
@@ -1,6 +1,7 @@
 #include <a8/a8.h>
 
 #include <a8/timer.h>
+#include <a8/xtimer.h>
 #include <a8/timer_attacher.h>
 
 namespace a8
@@ -26,4 +27,24 @@ namespace a8
         }
     }
 
+    XTimerAttacher::XTimerAttacher()
+    {
+        INIT_LIST_HEAD(&timer_list_);
+    }
+
+    XTimerAttacher::~XTimerAttacher()
+    {
+        ClearTimerList();
+    }
+
+    void XTimerAttacher::ClearTimerList()
+    {
+        struct list_head* pos = nullptr;
+        struct list_head* n = nullptr;
+        list_for_each_safe(pos, n, &timer_list_){
+            xtimer_list* tmp_timer = xtimer->GetTimerByAttach(pos);
+            xtimer->DeleteTimer(tmp_timer);
+        }
+    }
+
 }
diff --git a/a8/timer_attacher.h b/a8/timer_attacher.h
index 457f1ff..5b900f3 100644
--- a/a8/timer_attacher.h
+++ b/a8/timer_attacher.h
@@ -14,6 +14,18 @@ namespace a8
         void ClearTimerList();
     };
 
+    class XTimer;
+    class XTimerAttacher
+    {
+    public:
+        XTimer* xtimer = nullptr;
+        list_head timer_list_;
+
+        XTimerAttacher();
+        ~XTimerAttacher();
+        void ClearTimerList();
+    };
+
 }
 
 #endif