diff --git a/db/prod/2024-3-18-变更.sql b/db/prod/2024-3-18-变更.sql
index 8736bf50..8a97224b 100644
--- a/db/prod/2024-3-18-变更.sql
+++ b/db/prod/2024-3-18-变更.sql
@@ -195,3 +195,10 @@ INSERT INTO `laws_tag` (`id`, `table_name`, `db_field_name`, `db_field_en_name`,
 INSERT INTO `laws_tag` (`id`, `table_name`, `db_field_name`, `db_field_en_name`, `db_field_txt`, `order_num`, `db_field_name_old`, `db_is_key`, `db_is_null`, `db_type`, `db_length`, `db_point_length`, `db_default_val`, `dict_field`, `dict_table`, `dict_text`, `field_show_type`, `field_href`, `field_length`, `field_valid_type`, `field_must_input`, `field_extend_json`, `field_default_value`, `is_show_form_create`, `is_query`, `is_show_form`, `is_show_list`, `is_read_only`, `query_mode`, `main_table`, `main_field`, `update_by`, `update_time`, `create_time`, `create_by`, `converter`, `query_def_val`, `query_dict_text`, `query_dict_field`, `query_dict_table`, `query_show_type`, `query_config_flag`, `query_valid_type`, `query_must_input`, `sort_flag`, `show_area`, `is_show_laws_list`, `is_show_search`, `del_flag`, `is_model`, `dict_id`, `home_search_context_order`, `home_search_file_order`, `dict_field_search`, `dict_table_search`, `dict_text_search`, `usable_range`) VALUES ('1818916543200575489', 'laws_domestic_standard', 'new_model_implementation_date_remarks', 'New model implementation date Remarks', '新车型实施日期备注', 12, 'new_model_implementation_date_remarks', 0, 1, 'String', 500, NULL, NULL, NULL, NULL, NULL, '5', NULL, NULL, NULL, '0', NULL, NULL, 1, 0, 1, 0, 0, NULL, NULL, NULL, NULL, NULL, '2024-08-01 15:47:52', 'ldq1', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, '0', '1499657602378825729', NULL, 0, 0, '1', NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 INSERT INTO `laws_tag` (`id`, `table_name`, `db_field_name`, `db_field_en_name`, `db_field_txt`, `order_num`, `db_field_name_old`, `db_is_key`, `db_is_null`, `db_type`, `db_length`, `db_point_length`, `db_default_val`, `dict_field`, `dict_table`, `dict_text`, `field_show_type`, `field_href`, `field_length`, `field_valid_type`, `field_must_input`, `field_extend_json`, `field_default_value`, `is_show_form_create`, `is_query`, `is_show_form`, `is_show_list`, `is_read_only`, `query_mode`, `main_table`, `main_field`, `update_by`, `update_time`, `create_time`, `create_by`, `converter`, `query_def_val`, `query_dict_text`, `query_dict_field`, `query_dict_table`, `query_show_type`, `query_config_flag`, `query_valid_type`, `query_must_input`, `sort_flag`, `show_area`, `is_show_laws_list`, `is_show_search`, `del_flag`, `is_model`, `dict_id`, `home_search_context_order`, `home_search_file_order`, `dict_field_search`, `dict_table_search`, `dict_text_search`, `usable_range`) VALUES ('1818916929537916923', 'laws_overseas_standard', 'on_the_production_date_remarks', 'Remarks on date of implementation in production ve', '在产车实施日期备注', 13, 'on_the_production_date_remarks', 0, 1, 'String', 500, NULL, NULL, NULL, NULL, NULL, '5', NULL, NULL, NULL, '0', NULL, NULL, 1, 0, 1, 0, 0, NULL, NULL, NULL, NULL, NULL, '2024-08-01 15:49:25', 'ldq1', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, '0', '1694630597254553601', NULL, 0, 0, '1', NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 INSERT INTO `laws_tag` (`id`, `table_name`, `db_field_name`, `db_field_en_name`, `db_field_txt`, `order_num`, `db_field_name_old`, `db_is_key`, `db_is_null`, `db_type`, `db_length`, `db_point_length`, `db_default_val`, `dict_field`, `dict_table`, `dict_text`, `field_show_type`, `field_href`, `field_length`, `field_valid_type`, `field_must_input`, `field_extend_json`, `field_default_value`, `is_show_form_create`, `is_query`, `is_show_form`, `is_show_list`, `is_read_only`, `query_mode`, `main_table`, `main_field`, `update_by`, `update_time`, `create_time`, `create_by`, `converter`, `query_def_val`, `query_dict_text`, `query_dict_field`, `query_dict_table`, `query_show_type`, `query_config_flag`, `query_valid_type`, `query_must_input`, `sort_flag`, `show_area`, `is_show_laws_list`, `is_show_search`, `del_flag`, `is_model`, `dict_id`, `home_search_context_order`, `home_search_file_order`, `dict_field_search`, `dict_table_search`, `dict_text_search`, `usable_range`) VALUES ('1818916929537916929', 'laws_domestic_standard', 'on_the_production_date_remarks', 'Remarks on date of implementation in production ve', '在产车实施日期备注', 12, 'on_the_production_date_remarks', 0, 1, 'String', 500, NULL, NULL, NULL, NULL, NULL, '5', NULL, NULL, NULL, '0', NULL, NULL, 1, 0, 1, 0, 0, NULL, NULL, NULL, NULL, NULL, '2024-08-01 15:49:25', 'ldq1', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, '0', '1499657602378825729', NULL, 0, 0, '1', NULL, NULL, NULL, NULL, NULL, NULL, NULL);
+
+-- 2024-08-12 零部件性能优化
+ALTER TABLE `laws_tag`
+    ADD COLUMN `tree_first_href` varchar(255) NULL DEFAULT NULL COMMENT '懒加载树形结构一级接口' AFTER `usable_range`;
+UPDATE `laws_tag` SET `field_show_type` = '17', `tree_first_href` = '/laws/standard/partName/queryFirstList' WHERE `id` = '1696038850540003301';
+UPDATE `laws_tag` SET `field_show_type` = '17', `tree_first_href` = '/laws/standard/partName/queryFirstList' WHERE `id` = '1696038850540003330';
+UPDATE `laws_tag` SET `field_show_type` = '17', `tree_first_href` = '/laws/standard/partName/queryFirstList' WHERE `id` = '1703608885251108865';
diff --git a/laws-modules/src/main/java/com/jero/modules/laws/standard/controller/LawsPartNameController.java b/laws-modules/src/main/java/com/jero/modules/laws/standard/controller/LawsPartNameController.java
index 9b39f7eb..84092b0b 100644
--- a/laws-modules/src/main/java/com/jero/modules/laws/standard/controller/LawsPartNameController.java
+++ b/laws-modules/src/main/java/com/jero/modules/laws/standard/controller/LawsPartNameController.java
@@ -1,10 +1,7 @@
 package com.jero.modules.laws.standard.controller;
 
-import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.jero.common.api.vo.Result;
 import com.jero.common.aspect.annotation.AutoLog;
-import com.jero.modules.laws.enterprise.entity.vo.LawsTreeNodeModel;
-import com.jero.modules.laws.standard.entity.LawsTreeNode;
 import com.jero.modules.laws.standard.entity.PartName;
 import com.jero.modules.laws.standard.entity.TreePage;
 import com.jero.modules.laws.standard.service.PartNameService;
@@ -64,5 +61,22 @@ public class LawsPartNameController {
         return Result.OK();
     }
 
+    @AutoLog(value = "企业标准-零部件树")
+    @ApiOperation(value = "企业标准-零部件树", notes = "企业标准-零部件树")
+    @GetMapping("/queryFirstList")
+    public Result<List<PartName>> queryFirstList(
+            @RequestParam(name = "nodeName", required = false, defaultValue = "") @ApiParam("节点名称") String nodeName) {
+        List<PartName> list = partNameService.queryList(nodeName);
+        return Result.OK(list);
+    }
+
+
+    @AutoLog(value = "企业标准-获取子集")
+    @ApiOperation(value = "企业标准-获取子集", notes = "企业标准-获取子集")
+    @GetMapping("/getChild")
+    public Result<List<PartName>> getChild(@RequestParam("parentCode") String parentCode,
+                                           @RequestParam("nodeName") String nodeName) {
+        return Result.OK(partNameService.getChild(parentCode, nodeName));
+    }
 
 }
diff --git a/laws-modules/src/main/java/com/jero/modules/laws/standard/entity/PartName.java b/laws-modules/src/main/java/com/jero/modules/laws/standard/entity/PartName.java
index 3a6a3ac9..64e640ba 100644
--- a/laws-modules/src/main/java/com/jero/modules/laws/standard/entity/PartName.java
+++ b/laws-modules/src/main/java/com/jero/modules/laws/standard/entity/PartName.java
@@ -4,17 +4,17 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-
-import java.io.Serializable;
-import java.util.Date;
-import java.util.List;
-
+import com.fasterxml.jackson.annotation.JsonProperty;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
+import java.io.Serializable;
+import java.util.Date;
+import java.util.List;
+
 /**
  * @TableName laws_part_name
  */
@@ -107,6 +107,14 @@ public class PartName implements Serializable {
     @ApiModelProperty(value = "备用字段3")
     private String remark3;
 
+    /**
+     * 是否是叶子节点
+     */
+    @ApiModelProperty(value = "是否是叶子节点")
+    @TableField(exist = false)
+    @JsonProperty("isLeaf")
+    private boolean leafFlag;
+
     /**
      * 子零部件
      */
diff --git a/laws-modules/src/main/java/com/jero/modules/laws/standard/service/PartNameService.java b/laws-modules/src/main/java/com/jero/modules/laws/standard/service/PartNameService.java
index 3e1abf66..55cdddca 100644
--- a/laws-modules/src/main/java/com/jero/modules/laws/standard/service/PartNameService.java
+++ b/laws-modules/src/main/java/com/jero/modules/laws/standard/service/PartNameService.java
@@ -35,4 +35,8 @@ public interface PartNameService extends IService<PartName> {
      * 零部件树历史数据处理
      */
     void fixFirstNodeCode();
+
+    List<PartName> queryList(String nodeName);
+
+    List<PartName> getChild(String parentCode, String nodeName);
 }
diff --git a/laws-modules/src/main/java/com/jero/modules/laws/standard/service/impl/PartNameServiceImpl.java b/laws-modules/src/main/java/com/jero/modules/laws/standard/service/impl/PartNameServiceImpl.java
index d82670f9..9354f0c1 100644
--- a/laws-modules/src/main/java/com/jero/modules/laws/standard/service/impl/PartNameServiceImpl.java
+++ b/laws-modules/src/main/java/com/jero/modules/laws/standard/service/impl/PartNameServiceImpl.java
@@ -193,6 +193,118 @@ public class PartNameServiceImpl extends ServiceImpl<PartNameMapper, PartName>
     }
 
 
+    @Override
+    public List<PartName> queryList(String nodeName) {
+        // 查询所有节点
+        LambdaQueryWrapper<PartName> queryWrapper = new LambdaQueryWrapper<>();
+        List<PartName> allNodes = list(queryWrapper);
+
+        // 通过 nodeName 过滤符合条件的节点
+        List<PartName> matchedNodes = allNodes.stream()
+                .filter(node -> node.getName() != null && node.getName().contains(nodeName))
+                .collect(Collectors.toList());
+
+        if (matchedNodes.isEmpty()) {
+            return Collections.emptyList();
+        }
+
+        // 用于存储一级节点
+        Set<PartName> rootNodes = new HashSet<>();
+
+        // 查找每个匹配节点的一级父节点
+        for (PartName matchedNode : matchedNodes) {
+            PartName currentNode = matchedNode;
+            while (currentNode != null && !currentNode.getParentCode().equals("Part")) {
+                // 查找当前节点的父节点
+                String parentCode = currentNode.getParentCode();
+                currentNode = allNodes.stream()
+                        .filter(node -> node.getCode().equals(parentCode))
+                        .findFirst()
+                        .orElse(null);
+            }
+            // 添加一级节点到结果集
+            if (currentNode != null) {
+                rootNodes.add(currentNode);
+            }
+        }
+
+        // 设置叶子标志的逻辑调整
+        for (PartName node : rootNodes) {
+            Set<String> descendantCodes = getAllDescendantCodes(node.getCode(), allNodes);  // 获取所有子孙节点的ID
+            boolean isLeaf = true;  // 默认设置为叶子节点
+
+            for (PartName matchedNode : matchedNodes) {
+                if (descendantCodes.contains(matchedNode.getCode())) {
+                    isLeaf = false;
+                    break;  // 如果在子孙节点中找到匹配节点，当前根节点不是叶子节点
+                }
+            }
+            node.setLeafFlag(isLeaf);  // 设置叶子标志
+        }
+
+        return new ArrayList<>(rootNodes);
+    }
+
+    // 方法：获取给定节点ID的所有子孙节点ID
+    private Set<String> getAllDescendantCodes(String parentCode, List<PartName> allNodes) {
+        Set<String> descendantCodes = new HashSet<>();
+        List<PartName> directChildren = allNodes.stream()
+                .filter(node -> node.getParentCode().equals(parentCode))
+                .collect(Collectors.toList());
+
+        for (PartName child : directChildren) {
+            descendantCodes.add(child.getCode());
+            descendantCodes.addAll(getAllDescendantCodes(child.getCode(), allNodes)); // 递归获取子孙节点
+        }
+
+        return descendantCodes;
+    }
+
+    @Override
+    public List<PartName> getChild(String parentCode, String nodeName) {
+        // 查询所有节点
+        LambdaQueryWrapper<PartName> queryWrapper = new LambdaQueryWrapper<>();
+        List<PartName> allNodes = list(queryWrapper);
+
+        // 通过 nodeName 过滤符合条件的节点
+        List<PartName> matchedNodes = allNodes.stream()
+                .filter(node -> node.getName() != null && node.getName().contains(nodeName))
+                .collect(Collectors.toList());
+
+        if (matchedNodes.isEmpty()) {
+            return Collections.emptyList();
+        }
+
+        // 用于存储一级节点
+        Set<PartName> rootNodes = new HashSet<>();
+
+        // 查找每个匹配节点的一级父节点
+        for (PartName matchedNode : matchedNodes) {
+            PartName currentNode = matchedNode;
+            while (currentNode != null && !currentNode.getParentCode().equals(parentCode)) {
+                // 查找当前节点的父节点
+                String pCode = currentNode.getParentCode();
+                currentNode = allNodes.stream()
+                        .filter(node -> node.getCode().equals(pCode))
+                        .findFirst()
+                        .orElse(null);
+            }
+            // 添加一级节点到结果集
+            if (currentNode != null) {
+                rootNodes.add(currentNode);
+            }
+        }
+
+        // 设置叶子标志
+        Set<String> rootNodeCodes = rootNodes.stream().map(PartName::getCode).collect(Collectors.toSet());
+        rootNodes.forEach(node -> {
+            node.setLeafFlag(matchedNodes.stream()
+                    .noneMatch(n -> rootNodeCodes.contains(n.getParentCode())));
+        });
+
+        return new ArrayList<>(rootNodes);
+    }
+
 }