diff --git a/scheduler/src/main/java/com/zfoo/scheduler/SchedulerContext.java b/scheduler/src/main/java/com/zfoo/scheduler/SchedulerContext.java
index f180f1d6..9d32b5a7 100644
--- a/scheduler/src/main/java/com/zfoo/scheduler/SchedulerContext.java
+++ b/scheduler/src/main/java/com/zfoo/scheduler/SchedulerContext.java
@@ -80,8 +80,7 @@ public class SchedulerContext implements ApplicationListener<ApplicationContextE
 
         logger.info("Scheduler shutdown gracefully.");
     }
-
-
+    
     @Override
     public void onApplicationEvent(ApplicationContextEvent event) {
         if (event instanceof ContextRefreshedEvent) {
@@ -89,7 +88,9 @@ public class SchedulerContext implements ApplicationListener<ApplicationContextE
             SchedulerContext.instance = this;
             instance.applicationContext = event.getApplicationContext();
             inject();
+            // 启动位于SchedulerBus的static静态代码块中
         } else if (event instanceof ContextClosedEvent) {
+            // 反射获取executor,关闭掉
             shutdown();
         }
     }