diff --git a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpTimesheetInfoServiceImpl.java b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpTimesheetInfoServiceImpl.java
index 7a9fe3c3..7f9f05e7 100644
--- a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpTimesheetInfoServiceImpl.java
+++ b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpTimesheetInfoServiceImpl.java
@@ -35,7 +35,9 @@ import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Service;
 import org.dromara.oa.erp.domain.bo.ErpTimesheetInfoBo;
 import org.dromara.oa.erp.domain.vo.ErpTimesheetInfoVo;
+import org.dromara.oa.erp.domain.ErpProjectInfo;
 import org.dromara.oa.erp.domain.ErpTimesheetInfo;
+import org.dromara.oa.erp.mapper.ErpProjectInfoMapper;
 import org.dromara.oa.erp.mapper.ErpTimesheetInfoMapper;
 import org.dromara.oa.erp.service.IErpTimesheetInfoService;
 import org.springframework.transaction.annotation.Transactional;
@@ -56,6 +58,8 @@ public class ErpTimesheetInfoServiceImpl implements IErpTimesheetInfoService {
 
     private final ErpTimesheetInfoMapper baseMapper;
 
+    private final ErpProjectInfoMapper projectInfoMapper;
+
     @DubboReference(timeout = 30000)
     private RemoteWorkflowService remoteWorkflowService;
 
@@ -158,7 +162,7 @@ public class ErpTimesheetInfoServiceImpl implements IErpTimesheetInfoService {
     @Transactional(rollbackFor = Exception.class)
     public Boolean insertByBo(ErpTimesheetInfoBo bo) {
         ErpTimesheetInfo add = MapstructUtils.convert(bo, ErpTimesheetInfo.class);
-        validEntityBeforeSave(add);
+        validEntityBeforeSave(add, bo);
         // 自动生成工时单号
         if (StringUtils.isBlank(add.getTimesheetCode())) {
             String timesheetCode = remoteCodeRuleService.selectCodeRuleCode("1015");
@@ -201,7 +205,7 @@ public class ErpTimesheetInfoServiceImpl implements IErpTimesheetInfoService {
     @Transactional(rollbackFor = Exception.class)
     public Boolean updateByBo(ErpTimesheetInfoBo bo) {
         ErpTimesheetInfo update = MapstructUtils.convert(bo, ErpTimesheetInfo.class);
-        validEntityBeforeSave(update);
+        validEntityBeforeSave(update, bo);
         int row = baseMapper.updateById(update);
 
         if (row > 0) {
@@ -241,8 +245,24 @@ public class ErpTimesheetInfoServiceImpl implements IErpTimesheetInfoService {
     /**
      * 保存前的数据校验
      */
-    private void validEntityBeforeSave(ErpTimesheetInfo entity) {
-        // TODO 做一些数据校验,如唯一约束
+    private void validEntityBeforeSave(ErpTimesheetInfo entity, ErpTimesheetInfoBo bo) {
+        if (bo == null || CollUtil.isEmpty(bo.getTimesheetProjectList())) {
+            return;
+        }
+        for (ErpTimesheetProjectBo line : bo.getTimesheetProjectList()) {
+            Long projectId = line.getProjectId();
+            if (projectId == null) {
+                continue;
+            }
+            ErpProjectInfo project = projectInfoMapper.selectById(projectId);
+            if (project == null) {
+                throw new ServiceException("项目工时所选项目不存在或已删除");
+            }
+            // sub_project_flag=1：主项目标记「含有子项目」，工时须报在研发子项目上
+            if ("1".equals(project.getSubProjectFlag())) {
+                throw new ServiceException("项目工时必须填报在研发子项目上，不能选择研发主项目");
+            }
+        }
     }
 
     /**