diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/domain/CarMaintenanceLifecycleDTO.java b/ruoyi-system/src/main/java/com/ruoyi/system/domain/CarMaintenanceLifecycleDTO.java
index d446035b..978dd2f6 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/domain/CarMaintenanceLifecycleDTO.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/domain/CarMaintenanceLifecycleDTO.java
@@ -27,10 +27,10 @@ public class CarMaintenanceLifecycleDTO implements Serializable
     /** 车牌号，工单中直接记录的车牌号，用于与车辆主档确认关联。 */
     private String plateNumber;
 
-    /** 维保类型编码，字典值，例如：一级保养、二级保养、小修、大修。 */
+    /** 维保类型编码 */
     private String typeCode;
 
-    /** 工单状态编码，字典值，例如：待派工、维修中、已完成、已结算。 */
+    /** 工单状态编码 */
     private String status;
 
     /** 录入里程，本次维保/保养时车辆的总行驶里程（数值型）。 */
diff --git a/ruoyi-system/src/main/resources/mapper/tyre/BaseCarLifecycleMapper.xml b/ruoyi-system/src/main/resources/mapper/tyre/BaseCarLifecycleMapper.xml
index d8b34251..aec02c9d 100644
--- a/ruoyi-system/src/main/resources/mapper/tyre/BaseCarLifecycleMapper.xml
+++ b/ruoyi-system/src/main/resources/mapper/tyre/BaseCarLifecycleMapper.xml
@@ -39,8 +39,20 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
                bt.tyre_brand as tyreBrand,
                bt.tyre_model as tyreModel,
                bt.wheel_postion as wheelPostion,
-               bt.pattern_depth as patternDepth
+               maint.pattern_depth as patternDepth
         from base_tyre bt
+            left join (
+                select tyre_rfid, pattern_depth
+                from (
+                    select tyre_rfid, pattern_depth,
+                            row_number() over (partition by tyre_rfid order by create_time desc, id desc) as rn
+                    from record_tyre_mileage
+                    where record_type = '保养'
+                      and pattern_depth is not null
+                      and pattern_depth <> ''
+                ) ranked
+                where rn = 1
+            ) maint on maint.tyre_rfid = bt.tyre_epc
         where bt.car_no = #{carNo}
         order by bt.wheel_postion, bt.tyre_id
     </select>