diff --git a/src/api/oa/oaCompany/model/index.ts b/src/api/oa/oaCompany/model/index.ts
index 9f56876..607d2e3 100644
--- a/src/api/oa/oaCompany/model/index.ts
+++ b/src/api/oa/oaCompany/model/index.ts
@@ -12,6 +12,7 @@ export interface OaCompany {
   companyName?: string;
   // 归属单位
   parentCompany?: string;
+  parentCompanyId?: number;
   // 单位编号
   companyNo?: string;
   // 企业标识
diff --git a/src/views/oa/oaCompany/components/oaCompanyEdit.vue b/src/views/oa/oaCompany/components/oaCompanyEdit.vue
index ee613c1..60bc45e 100644
--- a/src/views/oa/oaCompany/components/oaCompanyEdit.vue
+++ b/src/views/oa/oaCompany/components/oaCompanyEdit.vue
@@ -35,11 +35,15 @@
           v-model:value="form.companyName"
         />
       </a-form-item>
-      <a-form-item label="归属单位">
-        <a-input
-          allow-clear
-          placeholder="请输入归属单位(没有时默认'本单位')"
+      <a-form-item label="归属单位" name="parentCompany">
+        <a-select
           v-model:value="form.parentCompany"
+          show-search
+          allow-clear
+          option-filter-prop="label"
+          placeholder="请选择归属单位"
+          :options="parentCompanyOptions"
+          @change="handleParentCompanyChange"
         />
       </a-form-item>
       <a-form-item label="简称" name="shortName">
@@ -252,7 +256,11 @@
   import { ref, reactive, watch } from 'vue';
   import { Form, message } from 'ant-design-vue';
   import { assignObject, uuid } from 'ele-admin-pro';
-  import { addOaCompany, updateOaCompany } from '@/api/oa/oaCompany';
+  import {
+    addOaCompany,
+    updateOaCompany,
+    listOaCompany
+  } from '@/api/oa/oaCompany';
   import { OaCompany } from '@/api/oa/oaCompany/model';
   import { useThemeStore } from '@/store/modules/theme';
   import { storeToRefs } from 'pinia';
@@ -271,6 +279,13 @@
   // 资料库响应式数据
   const bizLibList = ref<any[]>([]);
   const pubLibList = ref<any[]>([]);
+  const parentCompanyOptions = ref<{ label: string; value: string }[]>([
+    {
+      label: '本单位（自己）',
+      value: '本单位'
+    }
+  ]);
+  const parentCompanyList = ref<OaCompany[]>([]);
   // 存储完整的资料库数据，用于查找名称
   const allLibraries = ref<any[]>([]);
 
@@ -300,6 +315,7 @@
     shortName: undefined,
     companyName: undefined,
     parentCompany: '本单位',
+    parentCompanyId: 0,
     companyCode: undefined,
     companyNo: undefined,
     companyType: undefined,
@@ -385,6 +401,70 @@
     form.companyLogo = '';
   };
 
+  // 获取归属单位下拉
+  const fetchParentCompanyOptions = async () => {
+    const list = await listOaCompany();
+    const currentCompanyId = props.data?.companyId;
+    parentCompanyList.value = list.filter(
+      (item) => item.companyId !== currentCompanyId
+    );
+    const options = parentCompanyList.value
+      .map((item) => item.companyName)
+      .filter((name): name is string => !!name)
+      .filter((name, index, arr) => arr.indexOf(name) === index)
+      .map((name) => ({
+        label: name,
+        value: name
+      }));
+
+    parentCompanyOptions.value = [
+      {
+        label: '本单位（自己）',
+        value: '本单位'
+      },
+      ...options.filter((item) => item.value !== '本单位')
+    ];
+
+    if (
+      form.parentCompany &&
+      !parentCompanyOptions.value.some(
+        (item) => item.value === form.parentCompany
+      )
+    ) {
+      parentCompanyOptions.value.push({
+        label: form.parentCompany,
+        value: form.parentCompany
+      });
+    }
+  };
+
+  const getParentCompanyIdByName = (name?: string) => {
+    if (!name || name === '本单位') {
+      return 0;
+    }
+    return (
+      parentCompanyList.value.find((item) => item.companyName === name)
+        ?.companyId ?? 0
+    );
+  };
+
+  const handleParentCompanyChange = (value?: string) => {
+    form.parentCompany = value || '本单位';
+    form.parentCompanyId = getParentCompanyIdByName(form.parentCompany);
+  };
+
+  const ensureParentCompanyOption = (value?: string) => {
+    if (
+      value &&
+      !parentCompanyOptions.value.some((item) => item.value === value)
+    ) {
+      parentCompanyOptions.value.push({
+        label: value,
+        value
+      });
+    }
+  };
+
   // 获取资料库列表
   const fetchLibraries = () => {
     return listPwlProjectLibrary().then((res) => {
@@ -433,6 +513,9 @@
           libraryIds: allLibraryIds.join(',') // 保存为逗号分隔的字符串
         };
         if (!formData.parentCompany) formData.parentCompany = '本单位';
+        formData.parentCompanyId = getParentCompanyIdByName(
+          formData.parentCompany
+        );
         const saveOrUpdate = isUpdate.value ? updateOaCompany : addOaCompany;
         saveOrUpdate(formData)
           .then((msg) => {
@@ -512,11 +595,16 @@
     async (visible) => {
       if (visible) {
         // 等待资料库列表加载完成后再设置回显
-        await fetchLibraries();
+        await Promise.all([fetchLibraries(), fetchParentCompanyOptions()]);
 
         images.value = [];
         if (props.data) {
           assignObject(form, props.data);
+          form.parentCompany = props.data.parentCompany || '本单位';
+          form.parentCompanyId =
+            props.data.parentCompanyId ??
+            getParentCompanyIdByName(form.parentCompany);
+          ensureParentCompanyOption(form.parentCompany);
           if (props.data.companyLogo) {
             images.value.push({
               uid: uuid(),
@@ -530,10 +618,14 @@
 
           isUpdate.value = true;
         } else {
+          form.parentCompany = '本单位';
+          form.parentCompanyId = 0;
           isUpdate.value = false;
         }
       } else {
         resetFields();
+        form.parentCompany = '本单位';
+        form.parentCompanyId = 0;
       }
     },
     { immediate: true }