diff --git a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ThreadPoolNotifyAlarmHandler.java b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ThreadPoolNotifyAlarmHandler.java
index ff30d116..c1de2ccd 100644
--- a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ThreadPoolNotifyAlarmHandler.java
+++ b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ThreadPoolNotifyAlarmHandler.java
@@ -20,6 +20,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.CommandLineRunner;
 
 import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.*;
 
 /**
@@ -134,7 +135,7 @@ public class ThreadPoolNotifyAlarmHandler implements Runnable, CommandLineRunner
      */
     public void checkPoolRejectedAlarm(String threadPoolId) {
         ThreadPoolNotifyAlarm threadPoolNotifyAlarm = GlobalNotifyAlarmManage.get(threadPoolId);
-        if (!threadPoolNotifyAlarm.getIsAlarm()) {
+        if (Objects.isNull(threadPoolNotifyAlarm)||!threadPoolNotifyAlarm.getIsAlarm()) {
             return;
         }
 
diff --git a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/manage/GlobalNotifyAlarmManage.java b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/manage/GlobalNotifyAlarmManage.java
index b9d26972..d772c549 100644
--- a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/manage/GlobalNotifyAlarmManage.java
+++ b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/manage/GlobalNotifyAlarmManage.java
@@ -16,7 +16,7 @@ public class GlobalNotifyAlarmManage {
     /**
      * Notify alarm map.
      */
-    private static final Map<String, ThreadPoolNotifyAlarm> NOTIFY_ALARM_MAP = new ConcurrentHashMap();
+    private static final Map<String, ThreadPoolNotifyAlarm> NOTIFY_ALARM_MAP = new ConcurrentHashMap<>();
 
     /**
      * Get.
diff --git a/hippo4j-core/src/main/java/cn/hippo4j/core/proxy/RejectedProxyInvocationHandler.java b/hippo4j-core/src/main/java/cn/hippo4j/core/proxy/RejectedProxyInvocationHandler.java
index 87e638c8..65794502 100644
--- a/hippo4j-core/src/main/java/cn/hippo4j/core/proxy/RejectedProxyInvocationHandler.java
+++ b/hippo4j-core/src/main/java/cn/hippo4j/core/proxy/RejectedProxyInvocationHandler.java
@@ -30,9 +30,7 @@ public class RejectedProxyInvocationHandler implements InvocationHandler {
 
         if (ApplicationContextHolder.getInstance() != null) {
             ThreadPoolNotifyAlarmHandler alarmHandler = ApplicationContextHolder.getBean(ThreadPoolNotifyAlarmHandler.class);
-            if (alarmHandler != null) {
-                alarmHandler.checkPoolRejectedAlarm(threadPoolId);
-            }
+            alarmHandler.checkPoolRejectedAlarm(threadPoolId);
         }
 
         try {