diff --git a/zh-cn/application-dev/reference/apis-mdm-kit/js-apis-enterprise-networkManager.md b/zh-cn/application-dev/reference/apis-mdm-kit/js-apis-enterprise-networkManager.md
index a4f588e8463e5a7064691853ca4d8b9df4a85b0b..aa06a2aeaf072a925eeab6fe4a65dd3385d7eef9 100644
--- a/zh-cn/application-dev/reference/apis-mdm-kit/js-apis-enterprise-networkManager.md
+++ b/zh-cn/application-dev/reference/apis-mdm-kit/js-apis-enterprise-networkManager.md
@@ -653,7 +653,7 @@ firewallRule = networkManager.getFirewallRules(wantTemp);
 
 addDomainFilterRule(admin: Want, domainFilterRule: DomainFilterRule): void
 
-为设备添加域名过滤规则。<br/>
+为设备添加域名过滤规则，仅支持IPv4。<br/>
 添加了[Action](#action)为ALLOW规则后，将会默认添加DENY规则，不在ALLOW规则之内的域名解析数据包将会被丢弃或拦截。
 
 **需要权限：** ohos.permission.ENTERPRISE_MANAGE_NETWORK
@@ -701,7 +701,7 @@ networkManager.addDomainFilterRule(wantTemp, domainFilterRule);
 
 removeDomainFilterRule(admin: Want, domainFilterRule?: DomainFilterRule): void
 
-移除设备域名过滤规则。<br/>
+移除设备域名过滤规则，仅支持IPv4。<br/>
 移除规则后如果不存在[Action](#action)为ALLOW规则后，会将[addDomainFilterRule](#networkmanageradddomainfilterrule)添加的默认DENY规则清空。
 
 **需要权限：** ohos.permission.ENTERPRISE_MANAGE_NETWORK
@@ -752,7 +752,7 @@ networkManager.removeDomainFilterRule(wantTemp);
 
 getDomainFilterRules(admin: Want): Array\<DomainFilterRule>
 
-查询设备域名过滤规则。
+查询设备域名过滤规则，仅支持IPv4。
 
 **需要权限：** ohos.permission.ENTERPRISE_MANAGE_NETWORK