diff --git a/web-infrastructure/src/main/resources/mapper/tasklist/TaskDetailMapper.xml b/web-infrastructure/src/main/resources/mapper/tasklist/TaskDetailMapper.xml
index 896e846..6a16943 100644
--- a/web-infrastructure/src/main/resources/mapper/tasklist/TaskDetailMapper.xml
+++ b/web-infrastructure/src/main/resources/mapper/tasklist/TaskDetailMapper.xml
@@ -43,8 +43,8 @@
                 AND td.task_status = #{params.taskStatus}
             </if>
             <if test="params.taskPeriodStart != null and params.taskPeriodStart != '' and params.taskPeriodEnd != null and params.taskPeriodEnd != ''">
-                AND tl.period_start_time <= #{params.taskPeriodEnd}
-                AND tl.period_end_time >= #{params.taskPeriodStart}
+                AND tl.period_start_time &lt;= #{params.taskPeriodEnd}
+                AND tl.period_end_time &gt;= #{params.taskPeriodStart}
             </if>
         </where>
         ORDER BY td.id ASC