diff --git a/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java b/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
index f1fe3b1520..156450107d 100644
--- a/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
+++ b/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
@@ -39,6 +39,12 @@ import org.apache.dolphinscheduler.server.worker.runner.RetryReportTaskStatusThr
 import org.apache.dolphinscheduler.server.worker.runner.WorkerManagerThread;
 import org.apache.dolphinscheduler.service.alert.AlertClientService;
 import org.apache.dolphinscheduler.service.bean.SpringApplicationContext;
+import org.apache.dolphinscheduler.spi.task.TaskExecutionContextCacheManager;
+import org.apache.dolphinscheduler.spi.task.request.TaskRequest;
+
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.Collection;
 
 import javax.annotation.PostConstruct;
 
@@ -141,7 +147,7 @@ public class WorkerServer implements IStoppable {
         this.nettyRemotingServer = new NettyRemotingServer(serverConfig);
         this.nettyRemotingServer.registerProcessor(CommandType.TASK_EXECUTE_REQUEST, new TaskExecuteProcessor(alertClientService, taskPluginManager));
         this.nettyRemotingServer.registerProcessor(CommandType.TASK_KILL_REQUEST, new TaskKillProcessor());
-        this.nettyRemotingServer.registerProcessor(CommandType.TASK_KILL_RESPONSE_ACK,new TaskKillAckProcessor());
+        this.nettyRemotingServer.registerProcessor(CommandType.TASK_KILL_RESPONSE_ACK, new TaskKillAckProcessor());
         this.nettyRemotingServer.registerProcessor(CommandType.DB_TASK_ACK, new DBTaskAckProcessor());
         this.nettyRemotingServer.registerProcessor(CommandType.DB_TASK_RESPONSE, new DBTaskResponseProcessor());
         this.nettyRemotingServer.registerProcessor(CommandType.PROCESS_HOST_UPDATE_REQUEST, new HostUpdateProcessor());
@@ -198,6 +204,11 @@ public class WorkerServer implements IStoppable {
             this.nettyRemotingServer.close();
             this.workerRegistryClient.unRegistry();
             this.alertClientService.close();
+
+            // kill running tasks
+            this.killAllRunningTasks();
+
+            // close the application context
             this.springApplicationContext.close();
             logger.info("springApplicationContext close");
             try {
@@ -217,4 +228,21 @@ public class WorkerServer implements IStoppable {
     public void stop(String cause) {
         close(cause);
     }
+
+    /**
+     * kill all tasks which are running
+     */
+    public void killAllRunningTasks() {
+        Collection<TaskRequest> taskRequests = TaskExecutionContextCacheManager.getAllTaskRequestList();
+        logger.info("ready to kill all cache job, job size:{}", taskRequests.size());
+
+        if (CollectionUtils.isEmpty(taskRequests)) {
+            return;
+        }
+
+        for (TaskRequest taskRequest : taskRequests) {
+            // kill task when it's not finished yet
+            org.apache.dolphinscheduler.plugin.task.api.ProcessUtils.kill(taskRequest);
+        }
+    }
 }
diff --git a/dolphinscheduler-spi/src/main/java/org/apache/dolphinscheduler/spi/task/TaskExecutionContextCacheManager.java b/dolphinscheduler-spi/src/main/java/org/apache/dolphinscheduler/spi/task/TaskExecutionContextCacheManager.java
index c4347d6bee..e2ab195a4b 100644
--- a/dolphinscheduler-spi/src/main/java/org/apache/dolphinscheduler/spi/task/TaskExecutionContextCacheManager.java
+++ b/dolphinscheduler-spi/src/main/java/org/apache/dolphinscheduler/spi/task/TaskExecutionContextCacheManager.java
@@ -19,6 +19,7 @@ package org.apache.dolphinscheduler.spi.task;
 
 import org.apache.dolphinscheduler.spi.task.request.TaskRequest;
 
+import java.util.Collection;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -66,4 +67,8 @@ public class TaskExecutionContextCacheManager {
         taskRequestContextCache.computeIfPresent(request.getTaskInstanceId(), (k, v) -> request);
         return taskRequestContextCache.containsKey(request.getTaskInstanceId());
     }
+
+    public static Collection<TaskRequest> getAllTaskRequestList() {
+        return taskRequestContextCache.values();
+    }
 }