diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
index 95f20af7f..641e51c4e 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
@@ -38,6 +38,7 @@ import org.dromara.warm.flow.core.enums.UserType;
 import org.dromara.warm.flow.core.service.*;
 import org.dromara.warm.flow.core.utils.ExpressionUtil;
 import org.dromara.warm.flow.core.utils.MapUtil;
+import org.dromara.warm.flow.core.constant.ExceptionCons;
 import org.dromara.warm.flow.orm.entity.*;
 import org.dromara.warm.flow.orm.mapper.FlowHisTaskMapper;
 import org.dromara.warm.flow.orm.mapper.FlowInstanceMapper;
@@ -46,6 +47,7 @@ import org.dromara.warm.flow.orm.mapper.FlowTaskMapper;
 import org.dromara.workflow.common.ConditionalOnEnable;
 import org.dromara.workflow.common.enums.TaskAssigneeType;
 import org.dromara.workflow.common.enums.TaskOperationEnum;
+import org.dromara.warm.flow.core.exception.FlowException;
 import org.dromara.workflow.common.enums.TaskStatusEnum;
 import org.dromara.workflow.domain.FlowInstanceBizExt;
 import org.dromara.workflow.domain.bo.*;
@@ -64,6 +66,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.util.*;
+import java.util.stream.Collectors;
 
 import static org.dromara.workflow.common.constant.FlowConstant.*;
 
@@ -544,27 +547,34 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
             return nodeService.getByNodeCodes(Collections.singletonList(node.getAnyNodeSkip()), task.getDefinitionId());
         }
         //获取可驳回的前置节点
-        List<Node> nodes = nodeService.previousNodeList(task.getDefinitionId(), nowNodeCode);
-        List<HisTask> hisTaskList = hisTaskService.getByInsId(task.getInstanceId());
+        Instance instance = insService.getById(task.getInstanceId());
+        List<Node> allPreNodes = nodeService.previousNodeList(task.getDefinitionId(), nowNodeCode);
+        Node startNode = nodeService.getStartNode(task.getDefinitionId());
+        List<Node> allPreNodes2 = new ArrayList<>();
+        getBackTaskNodes(allPreNodes2, instance, CollUtil.toList(startNode));
+        List<Node> nodes = allPreNodes.stream().filter(allPreNodes2::contains).collect(Collectors.toList());
 
-        Map<String, Node> nodeMap = StreamUtils.toIdentityMap(nodes, Node::getNodeCode);
-        Set<String> added = new HashSet<>();
-        List<Node> backNodeList = new ArrayList<>();
-        for (HisTask hisTask : hisTaskList) {
-            Node nodeValue = nodeMap.get(hisTask.getNodeCode());
-            if (nodeValue != null
-                && NodeType.BETWEEN.getKey().equals(nodeValue.getNodeType())
-                && added.add(nodeValue.getNodeCode())) {
-                backNodeList.add(nodeValue);
-            }
-        }
-        if (CollUtil.isNotEmpty(backNodeList)) {
-            Collections.reverse(backNodeList);
-            return backNodeList;
+        if (CollUtil.isNotEmpty(nodes)) {
+            return StreamUtils.filter(nodes, e -> NodeType.BETWEEN.getKey().equals(e.getNodeType()));
         }
         return nodes;
     }
 
+    private void getBackTaskNodes(List<Node> nodes, Instance instance, List<Node> startNodes) {
+        nodes.addAll(startNodes);
+        for (Node startNode : startNodes) {
+            try {
+                List<Node> temp = nodeService.getNextNodeList(instance.getDefinitionId(), startNode.getNodeCode(), null, SkipType.PASS.getKey(), instance.getVariableMap());
+                getBackTaskNodes(nodes, instance, temp);
+            }catch(FlowException e){
+                // 仅放行条件缺失异常
+                if(!ExceptionCons.NULL_CONDITION_VALUE.equals(e.getMessage())){
+                    throw e;
+                }
+            }
+        }
+    }
+
     /**
      * 终止任务
      *