diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/SysOaProjectController.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/SysOaProjectController.java
index a617d3f..0a46926 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/SysOaProjectController.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/SysOaProjectController.java
@@ -8,6 +8,8 @@ import java.util.List;
 import java.util.Arrays;
 
 import com.baomidou.dynamic.datasource.annotation.DSTransactional;
+import com.ruoyi.common.core.AjaxResult;
+import com.ruoyi.oa.domain.SysOaProject;
 import com.ruoyi.oa.domain.bo.SysOaWarehouseDetailBo;
 import com.ruoyi.oa.domain.dto.ProjectActivityDTO;
 import com.ruoyi.oa.domain.dto.ProjectDataDTO;
@@ -260,5 +262,22 @@ public class SysOaProjectController extends BaseController {
                 beginTimeStart, beginTimeEnd, profitType,signingCompany, pageQuery);
     }
 
+    //项目id 延期日期 延期次数加一 修改finish_time
+    /**
+     * 项目延期接口
+     * 前端通过@RequestParam传参：项目ID（projectId）、延期后结束日期（tempTime）
+     */
+    @Log(title = "项目延期", businessType = BusinessType.UPDATE)
+    @PutMapping("/postpone")
+    public R<Void> postpone(@RequestParam Long projectId,
+                               // 加@DateTimeFormat确保前端字符串日期能正确转为Date（格式可根据前端调整）
+                               @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") @RequestParam Date tempTime) {
+        // 1. 构建BO（将RequestParam参数封装为BO，传给Service层）
+        SysOaProject bo = new SysOaProject();
+        bo.setProjectId(projectId);       // 项目ID
+        bo.setFinishTime(tempTime); // 延期后结束日期（对应前端tempTime）
+        // 2. 调用Service层执行延期逻辑，通过toAjax统一返回结果（若依框架常用方式）
+        return toAjax(iSysOaProjectService.postponeProject(bo));
+    }
 
 }
\ No newline at end of file
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/SysOaProject.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/SysOaProject.java
index 9aa8b3e..abce066 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/SysOaProject.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/SysOaProject.java
@@ -155,4 +155,9 @@ public class SysOaProject extends BaseEntity {
     private String projectCode;
     //签约公司
     private Integer signingCompany;
+
+    //初始结束时间
+    private Date originalFinishTime;
+    //延期次数
+    private Integer postponeCount;
 }
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/bo/SysOaProjectBo.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/bo/SysOaProjectBo.java
index 25bd5e7..85af36c 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/bo/SysOaProjectBo.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/bo/SysOaProjectBo.java
@@ -191,5 +191,10 @@ public class SysOaProjectBo extends BaseEntity {
     private String status;
     //签约公司
     private Integer signingCompany;
+
+    //初始结束时间
+    private Date originalFinishTime;
+    //延期次数
+    private Integer postponeCount;
 }
 
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/vo/SysOaProjectVo.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/vo/SysOaProjectVo.java
index 4b2f14f..94eef42 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/vo/SysOaProjectVo.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/domain/vo/SysOaProjectVo.java
@@ -258,4 +258,8 @@ public class SysOaProjectVo {
     //签约公司
     private Integer signingCompany;
 
+    //初始结束时间
+    private Date originalFinishTime;
+    //延期次数
+    private Integer postponeCount;
 }
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/ISysOaProjectService.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/ISysOaProjectService.java
index 2beeb98..ed524cb 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/ISysOaProjectService.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/ISysOaProjectService.java
@@ -1,5 +1,6 @@
 package com.ruoyi.oa.service;
 
+import com.ruoyi.oa.domain.SysOaProject;
 import com.ruoyi.oa.domain.bo.SysOaWarehouseDetailBo;
 import com.ruoyi.oa.domain.dto.ProjectActivityDTO;
 import com.ruoyi.oa.domain.dto.ProjectDataDTO;
@@ -98,4 +99,6 @@ public interface ISysOaProjectService {
 
     List<ProjectDataDTO> getProjectData(String month);
     List<ProjectActivityDTO> getProjectActivities();
+
+    Boolean postponeProject(SysOaProject bo);
 }
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/SysOaProjectServiceImpl.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/SysOaProjectServiceImpl.java
index 1edcdc1..ec9a3ce 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/SysOaProjectServiceImpl.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/SysOaProjectServiceImpl.java
@@ -2,6 +2,9 @@ package com.ruoyi.oa.service.impl;
 
 import cn.hutool.core.bean.BeanUtil;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
+import com.ruoyi.common.core.domain.model.LoginBody;
+import com.ruoyi.common.helper.LoginHelper;
 import com.ruoyi.common.utils.DateUtils;
 import com.ruoyi.common.utils.StringUtils;
 import com.ruoyi.common.core.page.TableDataInfo;
@@ -460,6 +463,8 @@ public class SysOaProjectServiceImpl implements ISysOaProjectService {
         return baseMapper.getProjectActivities();
     }
 
+
+
     private QueryWrapper<SysOaProject> buildOutWareQueryWrapper(SysOaWarehouseDetailBo bo) {
         QueryWrapper<SysOaProject> lqw = Wrappers.query();
         lqw.like(StringUtils.isNotBlank(bo.getProjectName()), "sop.projec_name", bo.getProjectName());
@@ -484,4 +489,37 @@ public class SysOaProjectServiceImpl implements ISysOaProjectService {
 
         return DateUtils.parseDate(DateUtils.parseDateToStr(format, time));
     }
+
+    @Override
+    public Boolean postponeProject(SysOaProject bo) {
+        // 1. 基础参数校验
+        if (bo.getProjectId() == null || bo.getFinishTime() == null) {
+            throw new RuntimeException("项目ID和延期日期不能为空"); // 也可返回false，根据业务选择
+        }
+
+        // 2. 查询项目是否存在
+        SysOaProject project = baseMapper.selectById(bo.getProjectId());
+        if (project == null) {
+            throw new RuntimeException("项目不存在，无法延期");
+        }
+
+        // 3. 校验延期日期合理性（延期日期不能早于当前结束日期）
+        if (project.getFinishTime() != null && bo.getFinishTime().before(project.getFinishTime())) {
+            throw new RuntimeException("延期日期不能早于当前结束日期（当前结束日期：" + project.getFinishTime() + "）");
+        }
+
+        // 4. 构建更新条件，执行延期操作
+        LambdaUpdateWrapper<SysOaProject> updateWrapper = new LambdaUpdateWrapper<>();
+        updateWrapper.eq(SysOaProject::getProjectId, bo.getProjectId()) // 锁定指定项目
+                .set(SysOaProject::getFinishTime, bo.getFinishTime()) // 延期日期赋值给finish_time
+                .set(SysOaProject::getPostponeTime, bo.getFinishTime()) // 同步更新“延期至日期”
+                .set(SysOaProject::getIsPostpone, 1) // 标记为已延期（1=是）
+                .setSql("postpone_count = postpone_count + 1") // 延期次数+1
+                .set(SysOaProject::getUpdateTime, new Date()) // 更新时间
+                .set(SysOaProject::getUpdateBy, LoginHelper.getLoginUser()); // 获取当前操作用户
+
+        // 5. 执行更新，返回操作结果（更新行数>0则视为成功）
+        return baseMapper.update(null, updateWrapper) > 0;
+    }
+
 }
diff --git a/ruoyi-oa/src/main/resources/mapper/oa/SysOaProjectMapper.xml b/ruoyi-oa/src/main/resources/mapper/oa/SysOaProjectMapper.xml
index 892dc85..58b2908 100644
--- a/ruoyi-oa/src/main/resources/mapper/oa/SysOaProjectMapper.xml
+++ b/ruoyi-oa/src/main/resources/mapper/oa/SysOaProjectMapper.xml
@@ -304,6 +304,8 @@
             p.postpone_time,
             p.color,
             p.signing_company,
+            p.postpone_count,
+            p.original_finish_time,
             TIMESTAMPDIFF(DAY, NOW(), p.postpone_time) AS remainTime
         FROM sys_oa_project p
 
@@ -583,6 +585,8 @@
                sop.update_time,
                sop.project_code,
                sop.signing_company,
+               sop.original_finish_time,
+               sop.postpone_count,
                is_postpone,
                postpone_reason,
                postpone_time,