diff --git a/src/timer.rs b/src/timer.rs
index 44eab73..7ba9538 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -176,7 +176,20 @@ impl Timer {
                         (*v)(TimerEvent::Exec, None);
                     }
                     None => {
-
+                    }
+                }
+                match self.running_timer.upgrade() {
+                    Some(v) => {
+                        match v.borrow().timer_type {
+                            TimerType::Timeout => {
+                                //self.internalDelete
+                            }
+                            TimerType::Interval => {
+                                //self.internalModify
+                            }
+                        }
+                    }
+                    None => {
                     }
                 }
             }
@@ -231,6 +244,17 @@ impl Timer {
         return Rc::downgrade(&t.borrow().wp);
     }
 
+    fn internal_delete(&mut self, timer_wp: TimerWp, is_destory: bool) {
+        match timer_wp.upgrade() {
+            Some(v) => {
+                if Weak::ptr_eq(&self.running_timer, &Rc::downgrade(&v)) {
+                }
+            }
+            None => {
+            }
+        }
+    }
+
     pub fn set_timeout(&mut self, time: i32, cb: TimerCb) -> TimerWp {
         return self.internal_add(TimerType::Timeout, time, cb, None);
     }
@@ -264,7 +288,14 @@ impl Timer {
     pub fn is_running(&self) {
     }
 
-    pub fn delete(&mut self, _timer_wp: TimerWp) {
+    pub fn delete(&mut self, timer_wp: TimerWp) {
+        match timer_wp.upgrade() {
+            Some(v) => {
+                self.internal_delete(timer_wp, false);
+            }
+            None => {
+            }
+        }
     }
 
     pub fn reset(&mut self, _timer_wp: TimerWp) {
@@ -281,7 +312,12 @@ impl Timer {
     fn gc_timer(&mut self, e: TimerEvent, _args: Option<Vec<Rc::<dyn Any>>>) {
         match e {
             TimerEvent::Exec => {
-
+                while self.free_timer_num > self.cache_timer_num &&
+                    !self.free_timer_list.borrow().empty() {
+                        let timer = &self.free_timer_list.borrow().first_entry();
+                        timer.upgrade().unwrap().borrow_mut().timer_entry.borrow_mut().del_init();
+                        self.free_timer_num -= 1;
+                }
             }
             TimerEvent::Custom(_v) => {