diff --git a/assets/core/common/manager/TimerManager.ts b/assets/core/common/manager/TimerManager.ts
index c8b8760..601eee4 100644
--- a/assets/core/common/manager/TimerManager.ts
+++ b/assets/core/common/manager/TimerManager.ts
@@ -263,42 +263,35 @@ export class TimerManager extends EventDispatcher {
     }
  */
 export class Timer {
-    /** 定时到了回调 */
     callback: Function | null = null;
 
     private _elapsedTime: number = 0;
 
-    /** 逝去时间 */
     get elapsedTime(): number {
         return this._elapsedTime;
     }
 
-    private _step: number = 0;
-    /** 获取触发间隔时间单位秒 */
+    private _step: number = -1;
+    /** 触发间隔时间（秒） */
     get step(): number {
         return this._step;
     }
-    /** 设置触发间隔时间单位秒 */
     set step(step: number) {
         this._step = step;                     // 每次修改时间
         this._elapsedTime = 0;                 // 逝去时间
     }
 
-    /** 进度 */
     get progress(): number {
         return this._elapsedTime / this._step;
     }
 
-    /**
-     * 构造函数
-     * @param step 每跳动一次步长单位位
-     */
     constructor(step: number = 0) {
         this.step = step;
     }
 
-    /** 游戏引擎的cc.Component组件的update方法调用 */
     update(dt: number) {
+        if (this.step <= 0) return false;
+
         this._elapsedTime += dt;
 
         if (this._elapsedTime >= this._step) {
@@ -309,8 +302,11 @@ export class Timer {
         return false;
     }
 
-    /** 重置 */
     reset() {
         this._elapsedTime = 0;
     }
+
+    stop() {
+        this.step = -1;
+    }
 }
\ No newline at end of file