diff --git a/src/main/java/com/guo/learningprogresstracker/controller/TaskController.java b/src/main/java/com/guo/learningprogresstracker/controller/TaskController.java
index caf510e..1f3bb4e 100644
--- a/src/main/java/com/guo/learningprogresstracker/controller/TaskController.java
+++ b/src/main/java/com/guo/learningprogresstracker/controller/TaskController.java
@@ -41,8 +41,7 @@ public class TaskController {
 
     @PostMapping
     @Operation(summary = "添加新任务")
-    public CommonResult addTask(@RequestBody @Validated({Ops.CreateG.class})  TaskRequest taskRequest) {
-        System.out.println("Token: " + StpUtil.getTokenValue());
+    public CommonResult addTask(@RequestBody @Validated({Ops.CreateG.class})  TaskRequest taskRequest) throws ErrorParameterException {
         return CommonResult.success(tasksService.addTask(taskRequest));
     }
 
diff --git a/src/main/java/com/guo/learningprogresstracker/service/TasksService.java b/src/main/java/com/guo/learningprogresstracker/service/TasksService.java
index 680cd53..c047621 100644
--- a/src/main/java/com/guo/learningprogresstracker/service/TasksService.java
+++ b/src/main/java/com/guo/learningprogresstracker/service/TasksService.java
@@ -6,6 +6,7 @@ import com.guo.learningprogresstracker.dto.TaskInfo;
 import com.guo.learningprogresstracker.dto.request.TaskRequest;
 import com.guo.learningprogresstracker.dto.response.TaskInfoResponse;
 import com.guo.learningprogresstracker.entity.TaskEntity;
+import com.guo.learningprogresstracker.exception.ErrorParameterException;
 
 import java.rmi.ServerException;
 
@@ -18,7 +19,7 @@ public interface TasksService extends IService<TaskEntity> {
 
     Page<TaskInfo> taskList(Integer pageNum, Integer pageSize);
 
-    String addTask(TaskRequest taskRequest);
+    String addTask(TaskRequest taskRequest) throws ErrorParameterException;
 
     TaskInfoResponse getTask(String taskId);
 
diff --git a/src/main/java/com/guo/learningprogresstracker/service/impl/TasksServiceImpl.java b/src/main/java/com/guo/learningprogresstracker/service/impl/TasksServiceImpl.java
index c721fc4..b99d03f 100644
--- a/src/main/java/com/guo/learningprogresstracker/service/impl/TasksServiceImpl.java
+++ b/src/main/java/com/guo/learningprogresstracker/service/impl/TasksServiceImpl.java
@@ -10,6 +10,7 @@ import com.guo.learningprogresstracker.dto.request.TaskRequest;
 import com.guo.learningprogresstracker.dto.response.TaskInfoResponse;
 import com.guo.learningprogresstracker.dto.response.TasksListInfoResponse;
 import com.guo.learningprogresstracker.entity.TaskEntity;
+import com.guo.learningprogresstracker.exception.ErrorParameterException;
 import com.guo.learningprogresstracker.mapStruct.RequestConvert;
 import com.guo.learningprogresstracker.mapStruct.TaskConvert;
 import com.guo.learningprogresstracker.mapStruct.TaskConvertImpl;
@@ -19,6 +20,7 @@ import com.guo.learningprogresstracker.utils.CalculatedPriorityTool;
 import com.guo.learningprogresstracker.utils.GenerateNumTool;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.ibatis.exceptions.TooManyResultsException;
 import org.springframework.stereotype.Service;
 
 import java.rmi.ServerException;
@@ -48,8 +50,14 @@ public class TasksServiceImpl extends ServiceImpl<TasksMapper, TaskEntity>
     }
 
     @Override
-    public String addTask(TaskRequest taskRequest) {
+    public String addTask(TaskRequest taskRequest) throws ErrorParameterException {
         TaskEntity task= TaskConvert.MAPPER.taskRequestToTaskEntity(taskRequest);
+
+        if (this.exists(Wrappers.lambdaQuery(TaskEntity.class)
+                .eq(TaskEntity::getTaskName, task.getTaskName()))) {
+            throw new ErrorParameterException(String.format("任务名[%s]重复", task.getTaskName()));
+        }
+
         task.setTaskNum(GenerateNumTool.generateNum("TASK"));
         PriorityDto priorityDto = RequestConvert.MAPPER.taskRequestToPriorityDto(taskRequest);
         task.setCalculatedPriority(CalculatedPriorityTool.calculatedPriority(priorityDto));