diff --git a/aucma-dms/DMS_SEQUENCES.sql b/aucma-dms/DMS_SEQUENCES.sql
index 86f5620..ea7ec40 100644
--- a/aucma-dms/DMS_SEQUENCES.sql
+++ b/aucma-dms/DMS_SEQUENCES.sql
@@ -295,6 +295,7 @@ CREATE SEQUENCE "HAIWEI"."SEQ_DMS_BILLS_INSPECT_ACTIVITY"
 
 -- 14. SEQ_DMS_MAINT_INST (保养工单)
 -- 表: DMS_BILLS_MAINT_INSTANCE
+-- 当前保养计划定时生成工单使用序列之一
 -- ----------------------------
 BEGIN
    EXECUTE IMMEDIATE 'DROP SEQUENCE "HAIWEI"."SEQ_DMS_MAINT_INST"';
@@ -329,6 +330,7 @@ CREATE SEQUENCE "HAIWEI"."SEQ_DMS_MAINT_INST_ACTIVITY"
 -- ----------------------------
 -- 15. SEQ_DMS_MAINT_DETAIL (保养工单明细)
 -- 表: DMS_BILLS_MAINT_DETAIL
+-- 当前保养计划定时生成工单使用序列之一
 -- ----------------------------
 BEGIN
    EXECUTE IMMEDIATE 'DROP SEQUENCE "HAIWEI"."SEQ_DMS_MAINT_DETAIL"';
@@ -346,6 +348,7 @@ CREATE SEQUENCE "HAIWEI"."SEQ_DMS_MAINT_DETAIL"
 -- ----------------------------
 -- 16. SEQ_DMS_MAINT_DTL_PROJ (保养明细项目)
 -- 表: DMS_BILLS_MAINT_DETAIL_PROJECT
+-- 当前保养计划定时生成工单使用序列之一
 -- ----------------------------
 BEGIN
    EXECUTE IMMEDIATE 'DROP SEQUENCE "HAIWEI"."SEQ_DMS_MAINT_DTL_PROJ"';
diff --git a/aucma-dms/src/main/java/com/aucma/dms/domain/DmsInspectInstanceDetail.java b/aucma-dms/src/main/java/com/aucma/dms/domain/DmsInspectInstanceDetail.java
index e5ce1d2..0d7bf69 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/domain/DmsInspectInstanceDetail.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/domain/DmsInspectInstanceDetail.java
@@ -47,6 +47,9 @@ public class DmsInspectInstanceDetail extends DmsBaseEntity
     @Excel(name = "巡检标准")
     private String inspectStandard;
 
+    /** 巡检标准名称（连表查询） */
+    private String standardName;
+
     /** 操作描述 */
     @Excel(name = "操作描述")
     private String inspectDesc;
@@ -132,6 +135,15 @@ public class DmsInspectInstanceDetail extends DmsBaseEntity
     {
         return inspectStandard;
     }
+    public void setStandardName(String standardName)
+    {
+        this.standardName = standardName;
+    }
+
+    public String getStandardName()
+    {
+        return standardName;
+    }
     public void setInspectDesc(String inspectDesc)
     {
         this.inspectDesc = inspectDesc;
@@ -210,6 +222,7 @@ public class DmsInspectInstanceDetail extends DmsBaseEntity
             .append("deviceId", getDeviceId())
             .append("instanceDetailStatus", getInstanceDetailStatus())
             .append("inspectStandard", getInspectStandard())
+            .append("standardName", getStandardName())
             .append("inspectDesc", getInspectDesc())
             .append("inspectValue", getInspectValue())
             .append("inspectStatus", getInspectStatus())
diff --git a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
index 38c824e..ccf6c45 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
@@ -6,6 +6,7 @@ import com.aucma.dms.domain.DmsBillsMaintInstance;
 import com.aucma.dms.domain.DmsMaintInstanceActivity;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.Date;
 import java.util.List;
 
 /**
@@ -92,4 +93,10 @@ public interface DmsBillsMaintInstanceMapper {
      * @return 工单数量
      */
     int countByPlanIdAndToday(@Param("planMaintId") Long planMaintId);
+
+    /**
+     * 统一从 DB 获取当前时间，避免应用机与数据库时钟偏差
+     * @return DB 当前时间
+     */
+    Date selectDbNow();
 }
diff --git a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsPlanMaintMapper.java b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsPlanMaintMapper.java
index e73a742..11d5754 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsPlanMaintMapper.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsPlanMaintMapper.java
@@ -123,4 +123,11 @@ public interface DmsPlanMaintMapper
     int updatePlanNextTime(@Param("planMaintId") Long planMaintId,
                            @Param("maintTime") Date maintTime);
 
+    /**
+     * 锁定保养计划行，避免并发重复生成工单
+     * @param planMaintId 计划ID
+     * @return 锁定到的计划ID
+     */
+    Long lockPlanById(@Param("planMaintId") Long planMaintId);
+
 }
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
index 49abb21..41114da 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
@@ -11,6 +11,8 @@ import com.aucma.dms.service.IDmsBillsMaintInstanceService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.dao.DuplicateKeyException;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
@@ -432,7 +434,27 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
         log.info("开始创建已完成保养工单 | planMaintCode={}, planMaintId={}, 明细数量={}",
                 planMaintCodeS, dmsPlanMaint.getPlanMaintId(), planMaintDetails.size());
 
-        Date now = new Date();
+        Long planMaintId = dmsPlanMaint.getPlanMaintId();
+        if (planMaintId != null) {
+            // 1) 先锁计划行，串行化同一计划的并发生成请求
+            Long lockedId = dmsPlanMaintMapper.lockPlanById(planMaintId);
+            if (lockedId == null) {
+                log.warn("保养计划不存在，跳过工单生成 | planMaintId={}, planMaintCode={}", planMaintId, planMaintCodeS);
+                return 0;
+            }
+            // 2) 再做当天查重（应用层幂等）
+            int existCount = dmsBillsMaintInstanceMapper.countByPlanIdAndToday(planMaintId);
+            if (existCount > 0) {
+                log.debug("保养计划今天已生成工单，跳过 | planMaintId={}, planMaintCode={}", planMaintId, planMaintCodeS);
+                return 0;
+            }
+        }
+
+        // 3) 统一使用 DB 时间，减少应用机/DB 机时钟差异
+        Date now = dmsBillsMaintInstanceMapper.selectDbNow();
+        if (now == null) {
+            now = new Date();
+        }
         DmsBillsMaintInstance instance = new DmsBillsMaintInstance();
 
         instance.setCreateTime(now);
@@ -451,7 +473,21 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
         // 创建人优先使用计划的创建人，若无则使用-1L表示系统自动创建
         instance.setCreateBy(dmsPlanMaint.getCreateBy() != null ? dmsPlanMaint.getCreateBy() : -1L);
 
-        int i = dmsBillsMaintInstanceMapper.insertDmsBillsMaintInstance(instance);
+        int i;
+        try {
+            i = dmsBillsMaintInstanceMapper.insertDmsBillsMaintInstance(instance);
+        } catch (DuplicateKeyException e) {
+            log.debug("保养工单触发唯一约束(重复生成)，跳过 | planMaintId={}, billsMaintCode={}",
+                    instance.getPlanMaintId(), instance.getBillsMaintCode());
+            return 0;
+        } catch (DataIntegrityViolationException e) {
+            if (isOracleUniqueViolation(e)) {
+                log.debug("保养工单触发 ORA-00001(重复生成)，跳过 | planMaintId={}, billsMaintCode={}",
+                        instance.getPlanMaintId(), instance.getBillsMaintCode());
+                return 0;
+            }
+            throw e;
+        }
 
         // 创建工单实例节点（第一步）
         DmsMaintInstanceActivity activity = new DmsMaintInstanceActivity();
@@ -502,4 +538,16 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
         return i;
     }
 
+    private boolean isOracleUniqueViolation(Throwable e) {
+        Throwable cursor = e;
+        while (cursor != null) {
+            String msg = cursor.getMessage();
+            if (msg != null && msg.contains("ORA-00001")) {
+                return true;
+            }
+            cursor = cursor.getCause();
+        }
+        return false;
+    }
+
 }
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsPlanMaintServiceImpl.java b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsPlanMaintServiceImpl.java
index b5e19f2..3b50774 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsPlanMaintServiceImpl.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsPlanMaintServiceImpl.java
@@ -8,7 +8,6 @@ import com.aucma.common.utils.StringUtils;
 import com.aucma.common.utils.uuid.Seq;
 import com.aucma.dms.domain.DmsPlanMaint;
 import com.aucma.dms.domain.DmsPlanMaintDetail;
-import com.aucma.dms.mapper.DmsBillsMaintInstanceMapper;
 import com.aucma.dms.mapper.DmsPlanMaintMapper;
 import com.aucma.dms.service.IDmsBillsMaintInstanceService;
 import com.aucma.dms.service.IDmsPlanMaintService;
@@ -38,9 +37,6 @@ public class DmsPlanMaintServiceImpl implements IDmsPlanMaintService {
     @Autowired
     private DmsPlanMaintMapper dmsPlanMaintMapper;
 
-    @Autowired
-    private DmsBillsMaintInstanceMapper dmsBillsMaintInstanceMapper;
-
     @Autowired
     private IDmsBillsMaintInstanceService dmsBillsMaintInstanceService;
 
@@ -342,13 +338,6 @@ public class DmsPlanMaintServiceImpl implements IDmsPlanMaintService {
                         continue;
                     }
 
-                    // 通过Mapper检查今天是否已生成工单（避免重复）
-                    int existCount = dmsBillsMaintInstanceMapper.countByPlanIdAndToday(planMaintId);
-                    if (existCount > 0) {
-                        log.debug("保养计划[{}]今天已生成工单，跳过", planMaintCode);
-                        continue;
-                    }
-
                     // 通过Service创建已完成状态的保养工单（含明细，工单中所有设备默认保养完成，异常可在网页端维护）
                     int insertRows = dmsBillsMaintInstanceService.insertCompletedMaintInstance(planMaintCode);
                     if (insertRows > 0) {
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
index 4e4563f..218f360 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
@@ -167,13 +167,35 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     <insert id="batchDmsBillsMaintDetail">
         insert into dms_bills_maint_detail( bills_maint_detail_id, maint_instance_id, device_id, station_id, maint_standard_id, operation_description, maint_status, is_flag, remark, create_by, create_time, update_by, update_time) values
         <foreach item="item" index="index" collection="list" separator=",">
-            ( #{item.billsMaintDetailId}, #{item.maintInstanceId}, #{item.deviceId}, #{item.stationId}, #{item.maintStandardId}, #{item.operationDescription}, #{item.maintStatus}, #{item.isFlag}, #{item.remark}, #{item.createBy}, #{item.createTime}, #{item.updateBy}, #{item.updateTime})
+            ( HAIWEI.SEQ_DMS_MAINT_DETAIL.NEXTVAL,
+              #{item.maintInstanceId,jdbcType=NUMERIC},
+              #{item.deviceId,jdbcType=NUMERIC},
+              #{item.stationId,jdbcType=NUMERIC},
+              #{item.maintStandardId,jdbcType=NUMERIC},
+              #{item.operationDescription,jdbcType=VARCHAR},
+              #{item.maintStatus,jdbcType=NUMERIC},
+              #{item.isFlag,jdbcType=NUMERIC},
+              #{item.remark,jdbcType=VARCHAR},
+              #{item.createBy,jdbcType=NUMERIC},
+              #{item.createTime,jdbcType=TIMESTAMP},
+              #{item.updateBy,jdbcType=NUMERIC},
+              #{item.updateTime,jdbcType=TIMESTAMP})
         </foreach>
     </insert>
     <insert id="batchDmsProject">
-        insert into dms_bills_maint_detail_project( bills_maint_detail_id, maint_project_id, maint_project_name, maint_project_desc, maint_project_status, remark, create_by, create_time, update_by, update_time) values
+        insert into dms_bills_maint_detail_project( maint_detail_project_id, bills_maint_detail_id, maint_project_id, maint_project_name, maint_project_desc, maint_project_status, remark, create_by, create_time, update_by, update_time) values
         <foreach item="item" index="index" collection="list" separator=",">
-            ( #{item.billsMaintDetailId}, #{item.maintProjectId}, #{item.maintProjectName}, #{item.maintProjectDesc}, #{item.maintProjectStatus}, #{item.remark},  #{item.createBy}, #{item.createTime}, #{item.updateBy}, #{item.updateTime})
+            ( HAIWEI.SEQ_DMS_MAINT_DTL_PROJ.NEXTVAL,
+              #{item.billsMaintDetailId,jdbcType=NUMERIC},
+              #{item.maintProjectId,jdbcType=NUMERIC},
+              #{item.maintProjectName,jdbcType=VARCHAR},
+              #{item.maintProjectDesc,jdbcType=VARCHAR},
+              #{item.maintProjectStatus,jdbcType=VARCHAR},
+              #{item.remark,jdbcType=VARCHAR},
+              #{item.createBy,jdbcType=NUMERIC},
+              #{item.createTime,jdbcType=TIMESTAMP},
+              #{item.updateBy,jdbcType=NUMERIC},
+              #{item.updateTime,jdbcType=TIMESTAMP})
         </foreach>
     </insert>
 
@@ -222,6 +244,13 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         SELECT COUNT(1)
         FROM dms_bills_maint_instance
         WHERE plan_maint_id = #{planMaintId}
-        AND TRUNC(create_time) = TRUNC(SYSDATE)
+          -- 使用 [当天00:00, 次日00:00) 范围，避免 TRUNC(create_time) 带来的索引失效风险
+          AND create_time &gt;= TRUNC(SYSDATE)
+          AND create_time &lt; TRUNC(SYSDATE) + 1
+    </select>
+
+    <!-- 统一从 DB 读取当前时间，避免应用与数据库时钟差异 -->
+    <select id="selectDbNow" resultType="java.util.Date">
+        SELECT SYSDATE FROM DUAL
     </select>
 </mapper>
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsInspectInstanceDetailMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsInspectInstanceDetailMapper.xml
index 4c38423..acdaff1 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsInspectInstanceDetailMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsInspectInstanceDetailMapper.xml
@@ -12,6 +12,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="deviceId"    column="machine_id"    />
         <result property="instanceDetailStatus"    column="instance_detail_status"    />
         <result property="inspectStandard"    column="inspect_standard"    />
+        <result property="standardName"    column="standard_name"    />
         <result property="inspectDesc"    column="inspect_desc"    />
         <result property="inspectStatus"    column="inspect_status"    />
         <result property="createBy"    column="create_by"    />
@@ -122,6 +123,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             diid.machine_id,
             diid.instance_detail_status,
             diid.inspect_standard,
+            dbis.standard_name,
             a.inspect_project_desc inspect_desc,
             diid.inspect_status,
             dbdl.device_code,
@@ -130,6 +132,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             dms_inspect_instance_detail diid
                 left join HAIWEI.base_deviceledger dbdl on
                 diid.machine_id = dbdl.OBJ_ID
+                left join dms_base_inspect_standard dbis on to_char(dbis.inspect_standard_id) = diid.inspect_standard
                 left join dms_inspect_inst_det_proj a on diid.instance_detail_id = a.instance_detail_id
     </sql>
 
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsPlanMaintMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsPlanMaintMapper.xml
index 0e9ee31..f67a0ac 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsPlanMaintMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsPlanMaintMapper.xml
@@ -229,4 +229,13 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         WHERE plan_maint_id = #{planMaintId}
     </update>
 
+    <!-- 锁定计划行，避免并发重复生成工单 -->
+    <select id="lockPlanById" resultType="java.lang.Long">
+        <!-- FOR UPDATE: 对同一 plan_maint_id 的并发任务形成串行执行 -->
+        SELECT plan_maint_id
+        FROM dms_plan_maint
+        WHERE plan_maint_id = #{planMaintId}
+        FOR UPDATE
+    </select>
+
 </mapper>