diff --git a/apps/web-antd/src/api/license/customer/index.ts b/apps/web-antd/src/api/license/customer/index.ts
index fa3319c..ac1415e 100644
--- a/apps/web-antd/src/api/license/customer/index.ts
+++ b/apps/web-antd/src/api/license/customer/index.ts
@@ -63,4 +63,9 @@ async function isCustomerNameExists(
   });
 }
 
-export { isCustomerNameExists };
+/** 查询当前最大sn */
+async function getMaxSn() {
+  return requestClient.get<boolean>('/license/customer/max-sn');
+}
+
+export { getMaxSn, isCustomerNameExists };
diff --git a/apps/web-antd/src/views/license/customer/modules/form.vue b/apps/web-antd/src/views/license/customer/modules/form.vue
index c94c51f..c72b7bb 100644
--- a/apps/web-antd/src/views/license/customer/modules/form.vue
+++ b/apps/web-antd/src/views/license/customer/modules/form.vue
@@ -11,6 +11,7 @@ import { useVbenForm } from '#/adapter/form';
 import {
   createCustomer,
   getCustomer,
+  getMaxSn,
   updateCustomer,
 } from '#/api/license/customer';
 import { $t } from '#/locales';
@@ -78,9 +79,16 @@ const [Modal, modalApi] = useVbenModal({
         modalApi.unlock();
       }
     }
+
     // 设置到 values
     formData.value = data;
     await formApi.setValues(formData.value);
+
+    // 设置最大SN
+    const maxSn = await getMaxSn();
+    if (!formData.value?.code) {
+      formApi.setFieldValue('code', maxSn);
+    }
   },
 });
 </script>