diff --git a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/controller/TaskTaskController.java b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/controller/TaskTaskController.java
index 07a7072..4150df0 100644
--- a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/controller/TaskTaskController.java
+++ b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/controller/TaskTaskController.java
@@ -257,6 +257,31 @@ public class TaskTaskController extends JeecgController<TaskTask, ITaskTaskServi
         return Result.error("删除待处理任务失败");
     }
 
+    /**
+     * 修改流程标题和截止时间（同时更新 task_task 表和 Flowable 流程变量）
+     */
+    @AutoLog(value = "修改流程标题和截止时间")
+    @Operation(summary = "修改流程标题和截止时间")
+    @RequiresPermissions("tasktask:task_task:edit")
+    @PostMapping(value = "/updateTitleAndDeadline")
+    public Result<String> updateTitleAndDeadline(@RequestParam("taskId") String taskId,
+                                                  @RequestParam("title") String title,
+                                                  @RequestParam("requireFinishDate") String requireFinishDate) {
+        if (oConvertUtils.isEmpty(taskId)) {
+            return Result.error("任务ID不能为空");
+        }
+        if (oConvertUtils.isEmpty(title)) {
+            return Result.error("标题不能为空");
+        }
+        if (oConvertUtils.isEmpty(requireFinishDate)) {
+            return Result.error("要求完成日期不能为空");
+        }
+        if (taskTaskService.updateTitleAndDeadline(taskId, title, requireFinishDate)) {
+            return Result.OK("修改成功");
+        }
+        return Result.error("修改失败");
+    }
+
     /**
      * 导出excel
      *
diff --git a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/ITaskTaskService.java b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/ITaskTaskService.java
index fae4eaa..907ba29 100644
--- a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/ITaskTaskService.java
+++ b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/ITaskTaskService.java
@@ -20,4 +20,5 @@ public interface ITaskTaskService extends IService<TaskTask> {
     boolean updateDeptHandlerName(String processInstanceId, String deptHandlerName);
     boolean deleteSingleProcess(String processInstId);
     boolean deletePendingTask(String taskId);
+    boolean updateTitleAndDeadline(String taskId, String title, String requireFinishDate);
 }
diff --git a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/impl/TaskTaskServiceImpl.java b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/impl/TaskTaskServiceImpl.java
index 7494062..6b49eab 100644
--- a/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/impl/TaskTaskServiceImpl.java
+++ b/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/tasktask/service/impl/TaskTaskServiceImpl.java
@@ -232,4 +232,34 @@ public class TaskTaskServiceImpl extends ServiceImpl<TaskTaskMapper, TaskTask> i
         log.info("【督办-删除待发起任务】已逻辑删除待发起的任务记录, taskId: {}", taskId);
         return true;
     }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public boolean updateTitleAndDeadline(String taskId, String title, String requireFinishDate) {
+        TaskTask taskTask = this.getById(taskId);
+        if (taskTask == null) {
+            log.warn("【督办-修改标题和截止时间】未找到tasktask记录, taskId: {}", taskId);
+            return false;
+        }
+        taskTask.setTitle(title);
+        taskTask.setRequireFinishDate(java.sql.Date.valueOf(requireFinishDate));
+        this.updateById(taskTask);
+        log.info("【督办-修改标题和截止时间】已更新tasktask表, taskId: {}, title: {}, requireFinishDate: {}", taskId, title, requireFinishDate);
+
+        if (StringUtils.isNotBlank(taskTask.getProcessInstId())) {
+            try {
+                runtimeService.setVariable(taskTask.getProcessInstId(), "title", title);
+                runtimeService.setVariable(taskTask.getProcessInstId(), "deadline", requireFinishDate);
+                String bizTitle = (String) runtimeService.getVariable(taskTask.getProcessInstId(), "bpm_biz_title");
+                if (StringUtils.isNotBlank(bizTitle)) {
+                    String suffix = bizTitle.replaceAll("^.*?(【)", "【");
+                    runtimeService.setVariable(taskTask.getProcessInstId(), "bpm_biz_title", title + suffix);
+                }
+                log.info("【督办-修改标题和截止时间】已更新流程变量, processInstId: {}", taskTask.getProcessInstId());
+            } catch (Exception e) {
+                log.error("【督办-修改标题和截止时间】更新流程变量失败, processInstId: {}", taskTask.getProcessInstId(), e);
+            }
+        }
+        return true;
+    }
 }