diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessTaskServiceImpl.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessTaskServiceImpl.java
index ef7cbf2cc..f2a7c828d 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessTaskServiceImpl.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessTaskServiceImpl.java
@@ -54,6 +54,7 @@ import org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl;
 import org.flowable.engine.impl.persistence.entity.ExecutionEntity;
 import org.flowable.engine.impl.util.CommandContextUtil;
 import org.flowable.engine.impl.util.ProcessDefinitionUtil;
+import org.flowable.engine.runtime.Execution;
 import org.flowable.engine.runtime.ProcessInstance;
 import org.flowable.engine.task.Attachment;
 import org.flowable.engine.task.Comment;
@@ -455,9 +456,14 @@ public class BpmnProcessTaskServiceImpl implements BpmnProcessTaskService {
             task.setProcessInstanceId(parentTask.getProcessInstanceId());
             task.setTaskDefinitionKey(parentTask.getTaskDefinitionKey());
             task.setTaskDefinitionId(parentTask.getTaskDefinitionId());
-            task.setExecutionId(parentTask.getExecutionId());
             task.setPriority(parentTask.getPriority());
             task.setCreateTime(new Date());
+
+            Execution subExecution = runtimeService.createExecutionQuery()
+                    .parentId(parentTask.getExecutionId()) // 将新执行实例设置为当前执行实例的子实例
+                    .activityId(parentTask.getTaskDefinitionKey()) // 指定活动ID
+                    .singleResult();
+            task.setExecutionId(subExecution.getId());
             log.info("流程加签父任务:{},正在创建加签子任务:{},", parentTaskId, JSONUtil.toJsonStr(Lists.newArrayList(task)));
             taskService.saveTask(task);