diff --git a/jcloud/jcloud/pagetype/server/server.py b/jcloud/jcloud/pagetype/server/server.py
index 7f72331..783224b 100644
--- a/jcloud/jcloud/pagetype/server/server.py
+++ b/jcloud/jcloud/pagetype/server/server.py
@@ -248,6 +248,9 @@ class BaseServer(Document, TagHelpers):
 			# 分离子域名
 			if self.name.endswith("." + domain.name):
 				sub_domain = self.name[:-len(domain.name)-1]
+				if not sub_domain:
+					log_error("主机记录为空，拒绝将主域名作为A记录", domain=domain.name, server=self.name)
+					return
 			else:
 				log_error("域名配置错误", domain=domain.name, server=self.name)
 				return
@@ -314,6 +317,7 @@ class BaseServer(Document, TagHelpers):
 						"RecordType": "A",
 						"RecordLine": "默认",
 						"Value": self.ip,
+						"SubDomain": sub_domain,  # 添加子域名参数，修复主机记录变为@的问题
 						"TTL": ttl_value
 					}
 					req.from_json_string(json.dumps(params))
@@ -348,6 +352,7 @@ class BaseServer(Document, TagHelpers):
 								"RecordType": "A",
 								"RecordLine": "默认",
 								"Value": self.ip,
+								"SubDomain": sub_domain,  # 同样在这里也添加子域名参数
 								"TTL": ttl_value
 							}
 							req.from_json_string(json.dumps(params))