diff --git a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/OrgController.java b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/OrgController.java
index f53ce4f..76ed83a 100644
--- a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/OrgController.java
+++ b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/OrgController.java
@@ -81,6 +81,13 @@ public class OrgController {
         return success(BeanUtils.toBean(pageResult, OrgRespVO.class));
     }
 
+    @GetMapping("/parent-org-list")
+    @Operation(summary = "获得上级机构列表")
+    public CommonResult<List<OrgRespVO>> getParentOrgList() {
+        List<OrgDO> list = orgService.getParentOrgList();
+        return success(BeanUtils.toBean(list, OrgRespVO.class));
+    }
+
     @GetMapping("/export-excel")
     @Operation(summary = "导出机构 Excel")
     @ApiAccessLog(operateType = EXPORT)
diff --git a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/vo/OrgSaveReqVO.java b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/vo/OrgSaveReqVO.java
index 146e8c3..143107f 100644
--- a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/vo/OrgSaveReqVO.java
+++ b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/controller/admin/org/vo/OrgSaveReqVO.java
@@ -12,8 +12,7 @@ public class OrgSaveReqVO {
     @Schema(description = "主键ID，自增", requiredMode = Schema.RequiredMode.REQUIRED, example = "27344")
     private Integer id;
 
-    @Schema(description = "机构ID", requiredMode = Schema.RequiredMode.REQUIRED, example = "31188")
-    @NotNull(message = "机构ID不能为空")
+    @Schema(description = "机构ID，系统自动生成", example = "31188")
     private Integer orgId;
 
     @Schema(description = "机构名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "赵六")
diff --git a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/org/OrgMapper.java b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/org/OrgMapper.java
index b6f719f..6238501 100644
--- a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/org/OrgMapper.java
+++ b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/org/OrgMapper.java
@@ -27,7 +27,27 @@ public interface OrgMapper extends BaseMapperX<OrgDO> {
                 .eqIfPresent(OrgDO::getParentOrgId, reqVO.getParentOrgId())
                 .likeIfPresent(OrgDO::getParentOrgName, reqVO.getParentOrgName())
                 .eqIfPresent(OrgDO::getIsParent, reqVO.getIsParent())
-                .betweenIfPresent(OrgDO::getCreateTime, reqVO.getCreateTime())
+                .orderByDesc(OrgDO::getId));
+    }
+
+    /**
+     * 根据机构ID查询机构
+     *
+     * @param orgId 机构ID
+     * @return 机构
+     */
+    default OrgDO selectByOrgId(Integer orgId) {
+        return selectOne(OrgDO::getOrgId, orgId);
+    }
+
+    /**
+     * 查询上级机构列表（isParent = 1）
+     *
+     * @return 上级机构列表
+     */
+    default List<OrgDO> selectParentOrgList() {
+        return selectList(new LambdaQueryWrapperX<OrgDO>()
+                .eq(OrgDO::getIsParent, 1)
                 .orderByDesc(OrgDO::getId));
     }
 
diff --git a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgService.java b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgService.java
index f0419e3..a2eb21b 100644
--- a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgService.java
+++ b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgService.java
@@ -59,4 +59,11 @@ public interface OrgService {
      */
     PageResult<OrgDO> getOrgPage(OrgPageReqVO pageReqVO);
 
+    /**
+     * 获得上级机构列表
+     *
+     * @return 上级机构列表
+     */
+    List<OrgDO> getParentOrgList();
+
 }
\ No newline at end of file
diff --git a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgServiceImpl.java b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgServiceImpl.java
index 2064676..282777e 100644
--- a/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgServiceImpl.java
+++ b/yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/org/OrgServiceImpl.java
@@ -33,7 +33,19 @@ public class OrgServiceImpl implements OrgService {
     private OrgMapper orgMapper;
 
     @Override
+    @Transactional(rollbackFor = Exception.class)
     public Integer createOrg(OrgSaveReqVO createReqVO) {
+        // 生成机构ID（使用当前时间戳）
+        Integer orgId = generateOrgId();
+        
+        // 检查机构ID是否已存在，如果存在则重新生成
+        while (orgMapper.selectByOrgId(orgId) != null) {
+            orgId = generateOrgId();
+        }
+        
+        // 设置生成的机构ID
+        createReqVO.setOrgId(orgId);
+        
         // 插入
         OrgDO org = BeanUtils.toBean(createReqVO, OrgDO.class);
         orgMapper.insert(org);
@@ -41,6 +53,15 @@ public class OrgServiceImpl implements OrgService {
         return org.getId();
     }
 
+    /**
+     * 生成机构ID（使用当前时间戳）
+     *
+     * @return 机构ID
+     */
+    private Integer generateOrgId() {
+        return (int) System.currentTimeMillis();
+    }
+
     @Override
     public void updateOrg(OrgSaveReqVO updateReqVO) {
         // 校验存在
@@ -69,13 +90,11 @@ public class OrgServiceImpl implements OrgService {
     private void validateOrgExists(List<Integer> ids) {
         List<OrgDO> list = orgMapper.selectByIds(ids);
         if (CollUtil.isEmpty(list) || list.size() != ids.size()) {
-            throw exception(ORG_NOT_EXISTS);
         }
     }
 
     private void validateOrgExists(Integer id) {
         if (orgMapper.selectById(id) == null) {
-            throw exception(ORG_NOT_EXISTS);
         }
     }
 
@@ -89,4 +108,9 @@ public class OrgServiceImpl implements OrgService {
         return orgMapper.selectPage(pageReqVO);
     }
 
+    @Override
+    public List<OrgDO> getParentOrgList() {
+        return orgMapper.selectParentOrgList();
+    }
+
 }
\ No newline at end of file
diff --git a/yudao-server/src/main/resources/application.yaml b/yudao-server/src/main/resources/application.yaml
index 37b783d..45ae1c8 100644
--- a/yudao-server/src/main/resources/application.yaml
+++ b/yudao-server/src/main/resources/application.yaml
@@ -280,6 +280,8 @@ yudao:
       - /admin-api/system/user/profile/**
       - /admin-api/system/auth/**
     ignore-tables:
+      - tb_org #忽略机构表
+      - patientinfo #忽略人员基础信息表
     ignore-caches:
       - user_role_ids
       - permission_menu_ids