diff --git a/src/timer.rs b/src/timer.rs
index f246698..cc87d16 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -141,7 +141,7 @@ impl Timer {
         let free_timer = |head: &TimerListListHeadRp| {
             while !head.borrow().empty() {
                 let timer = &head.borrow().first_entry().upgrade().unwrap();
-                //self.detach_timer(timer);
+                self.detach_timer(timer);
                 if timer.borrow().attach_entry.borrow().empty() {
                     timer.borrow().attach_entry.borrow_mut().del_init();
                 }
@@ -324,6 +324,18 @@ impl Timer {
                     self.running_timer = Weak::new();
                 }
                 self.detach_timer(&*v);
+                match &mut v.borrow_mut().cb {
+                    Some(cb) => {
+                        if is_destory {
+                            (*cb)(TimerEvent::Destory, None);
+                        } else {
+                            (*cb)(TimerEvent::Delete, None);
+                        }
+                        v.borrow_mut().cb = None;
+                    }
+                    None => {
+                    }
+                }
             }
             None => {
             }