diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomBizSpecifyAssigneeToTaskCmd.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomBizSpecifyAssigneeToTaskCmd.java
index 7afa60cee..e4fb8d792 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomBizSpecifyAssigneeToTaskCmd.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomBizSpecifyAssigneeToTaskCmd.java
@@ -6,6 +6,7 @@ import cn.axzo.workflow.core.common.exception.WorkflowEngineException;
 import cn.axzo.workflow.core.engine.cmd.helper.CustomTaskHelper;
 import org.flowable.common.engine.impl.interceptor.Command;
 import org.flowable.common.engine.impl.interceptor.CommandContext;
+import org.flowable.engine.RuntimeService;
 import org.flowable.engine.TaskService;
 import org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl;
 import org.flowable.engine.impl.util.CommandContextUtil;
@@ -18,6 +19,7 @@ import java.util.List;
 import java.util.Objects;
 
 import static cn.axzo.workflow.common.constant.BpmnConstants.DUMMY_ASSIGNEE_ID;
+import static cn.axzo.workflow.common.constant.BpmnConstants.INTERNAL_ACTIVITY_RELATION_ASSIGNEE_LIST_INFO_SNAPSHOT;
 import static cn.axzo.workflow.core.common.code.BpmnTaskRespCode.ACTIVITY_BIZ_SET_ASSIGNEE_ERROR;
 import static cn.axzo.workflow.core.common.code.BpmnTaskRespCode.ACTIVITY_CANT_SET_ASSIGNEE;
 
@@ -46,21 +48,44 @@ public class CustomBizSpecifyAssigneeToTaskCmd implements Command<Boolean>, Seri
         Task task = taskService.createTaskQuery().executionId(executionId)
                 .taskAssignee(DUMMY_ASSIGNEE_ID)
                 .singleResult();
+
         validTask(task);
 
+        changeAssigneeSnapshot(commandContext, task);
+
         addAssignee(commandContext, taskService, task);
 
         return true;
     }
 
+    private void changeAssigneeSnapshot(CommandContext commandContext, Task task) {
+        ProcessEngineConfigurationImpl processEngineConfiguration =
+                CommandContextUtil.getProcessEngineConfiguration(commandContext);
+        RuntimeService runtimeService = processEngineConfiguration.getRuntimeService();
+
+        List<BpmnTaskDelegateAssigner> originAssingeeList = runtimeService.getVariable(task.getProcessInstanceId(),
+                INTERNAL_ACTIVITY_RELATION_ASSIGNEE_LIST_INFO_SNAPSHOT + task.getTaskDefinitionKey(), List.class);
+
+        for (BpmnTaskDelegateAssigner assigner : originAssingeeList) {
+            if (Objects.equals(assigner.buildAssigneeId(), DUMMY_ASSIGNEE_ID)) {
+                originAssingeeList.remove(assigner);
+                break;
+            }
+        }
+        originAssingeeList.addAll(addedAssigners);
+        runtimeService.setVariable(task.getProcessInstanceId(),
+                INTERNAL_ACTIVITY_RELATION_ASSIGNEE_LIST_INFO_SNAPSHOT + task.getTaskDefinitionKey(),
+                originAssingeeList);
+    }
+
     private void addAssignee(CommandContext commandContext, TaskService taskService, Task task) {
         if (CollectionUtils.isEmpty(addedAssigners)) {
             return;
         }
+
         addedAssigners.forEach(i -> {
             if (Objects.equals(task.getAssignee(), DUMMY_ASSIGNEE_ID)) {
-                task.setAssignee(i.buildAssigneeId());
-                taskService.saveTask(task);
+                taskService.setAssignee(task.getId(), i.buildAssigneeId());
             } else {
                 CustomTaskHelper.addMultiTask(commandContext, (TaskEntity) task, i);
             }
diff --git a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/common/annotation/RepeatSubmit.java b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/common/annotation/RepeatSubmit.java
index ff8f05c8c..0de59ffcb 100644
--- a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/common/annotation/RepeatSubmit.java
+++ b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/common/annotation/RepeatSubmit.java
@@ -22,7 +22,7 @@ public @interface RepeatSubmit {
     /**
      * 间隔时间(ms)，小于此时间视为重复提交
      */
-    int interval() default 30000;
+    int interval() default 3000;
 
     TimeUnit timeUnit() default TimeUnit.MILLISECONDS;
 
diff --git a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/listener/task/MessagePushTaskEventListener.java b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/listener/task/MessagePushTaskEventListener.java
index f06f4d86f..f7815bd1f 100644
--- a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/listener/task/MessagePushTaskEventListener.java
+++ b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/listener/task/MessagePushTaskEventListener.java
@@ -26,6 +26,7 @@ import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 
+import static cn.axzo.workflow.common.constant.BpmnConstants.DUMMY_ASSIGNEE_ID;
 import static cn.axzo.workflow.common.constant.BpmnConstants.INTERNAL_ACTIVITY_RELATION_ASSIGNEE_LIST_INFO_SNAPSHOT;
 import static cn.axzo.workflow.common.constant.BpmnConstants.TASK_ASSIGNEE_SKIP_FLAT;
 
@@ -59,6 +60,10 @@ public class MessagePushTaskEventListener implements BpmnTaskEventListener, Orde
             pendingComplete(delegateTask);
             return;
         }
+        if (Objects.equals(DUMMY_ASSIGNEE_ID, delegateTask.getAssignee())) {
+            // 业务指定审批人, 不用发待办
+            return;
+        }
         pendingPush(delegateTask);
         if (log.isDebugEnabled()) {
             log.debug("MessagePushTaskEventListener#onAssigned...end: {}", delegateTask.getTaskDefinitionKey());