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 c132ae5..eb2629b 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
@@ -10,8 +10,10 @@ import java.net.URLDecoder;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+import liquibase.pro.packaged.E;
 import org.apache.commons.lang.StringUtils;
 import org.apache.shiro.SecurityUtils;
+import org.flowable.task.api.Task;
 import org.jeecg.common.api.vo.Result;
 import org.jeecg.common.system.query.QueryGenerator;
 import org.jeecg.common.system.query.QueryRuleEnum;
@@ -37,6 +39,7 @@ import org.jeecgframework.poi.excel.view.JeecgEntityExcelView;
 import org.jeecg.common.system.base.controller.JeecgController;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.CollectionUtils;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.MultipartHttpServletRequest;
@@ -192,6 +195,17 @@ public class TaskTaskController extends JeecgController<TaskTask, ITaskTaskServi
         return Result.OK(taskTask);
     }
 
+    //@AutoLog(value = "事项任务计划表（发起流程）-通过id查询")
+    @Operation(summary = "事项任务计划表（发起流程）-通过businessId查询")
+    @GetMapping(value = "/queryByBusinessId")
+    public Result<List<TaskTask>> queryByBusinessId(@RequestParam(name = "businessId", required = true) String businessId) throws Exception {
+        List<TaskTask> taskTaskList = taskTaskService.getTaskTaskListByBusinessId(businessId);
+        if (CollectionUtils.isEmpty(taskTaskList)) {
+            return Result.error("未找到对应数据");
+        }
+        return Result.OK(taskTaskList);
+    }
+
     /**
      * 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 548f294..4067099 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
@@ -4,6 +4,8 @@ import org.jeecg.common.api.vo.Result;
 import org.jeecg.modules.tasktask.entity.TaskTask;
 import com.baomidou.mybatisplus.extension.service.IService;
 
+import java.util.List;
+
 /**
  * @Description: 事项任务计划表（发起流程）
  * @Author: jeecg-boot
@@ -14,4 +16,5 @@ public interface ITaskTaskService extends IService<TaskTask> {
     boolean singleFlowStart(TaskTask taskTask,String userName) throws Exception;
     boolean multiFlowStart(TaskTask taskTask,String userName,Integer intervalType, Integer startCount) throws Exception;
     Result<?> handleFlowStart(TaskTask taskTask, String username, Integer intervalType, Integer startCount)throws Exception;
+    List<TaskTask> getTaskTaskListByBusinessId(String businessId) throws Exception;
 }
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 0cf1f36..3e41091 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
@@ -1,6 +1,7 @@
 package org.jeecg.modules.tasktask.service.impl;
 
 import com.alibaba.fastjson.JSON;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import org.apache.commons.lang.StringUtils;
 import org.apache.shiro.util.Assert;
 import org.jeecg.common.api.vo.Result;
@@ -121,4 +122,13 @@ public class TaskTaskServiceImpl extends ServiceImpl<TaskTaskMapper, TaskTask> i
 
         return Result.ok();
     }
+    public List<TaskTask> getTaskTaskListByBusinessId(String businessId) throws Exception{
+        if (StringUtils.isBlank(businessId)) {
+            return Collections.emptyList();
+        }
+        LambdaQueryWrapper<TaskTask> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(TaskTask::getBusinessId, businessId);
+        // 2. 查询不到数据 → MP 本身会返回空集合，不是 null
+        return this.list(queryWrapper);
+    }
 }