diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
index b5c943e90..3c0b59541 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
@@ -186,7 +186,7 @@ public class FlwInstanceServiceImpl implements IFlwInstanceService {
     @Override
     @Transactional(rollbackFor = Exception.class)
     public boolean deleteByBusinessIds(List<Long> businessIds) {
-        List<FlowInstance> flowInstances = flowInstanceMapper.selectList(new LambdaQueryWrapper<FlowInstance>().in(FlowInstance::getBusinessId, businessIds));
+        List<FlowInstance> flowInstances = flowInstanceMapper.selectList(new LambdaQueryWrapper<FlowInstance>().in(FlowInstance::getBusinessId, StreamUtils.toList(businessIds,Convert::toStr)));
         if (CollUtil.isEmpty(flowInstances)) {
             log.warn("未找到对应的流程实例信息，无法执行删除操作。");
             return false;