diff --git a/web/public/js/components/server/domains-box.js b/web/public/js/components/server/domains-box.js
index 1de01d04..23a390cd 100644
--- a/web/public/js/components/server/domains-box.js
+++ b/web/public/js/components/server/domains-box.js
@@ -227,7 +227,7 @@ Vue.component("domains-box", {
 				&nbsp; <a href="" title="取消" @click.prevent="cancel"><i class="icon remove small"></i></a>
 			</div>
 		</div>
-		<p class="comment" v-if="supportWildcard">支持普通域名（<code-label>example.com</code-label>）、泛域名（<code-label>*.example.com</code-label>）<span v-if="vSupportWildcard == undefined">、域名后缀（以点号开头，如<code-label>.example.com</code-label>）和正则表达式（以波浪号开头，如<code-label>~.*.example.com</code-label>）</span>。</p>
+		<p class="comment" v-if="supportWildcard">支持普通域名（<code-label>example.com</code-label>）、泛域名（<code-label>*.example.com</code-label>）<span v-if="vSupportWildcard == undefined">、域名后缀（以点号开头，如<code-label>.example.com</code-label>）和正则表达式（以波浪号开头，如<code-label>~.*.example.com</code-label>）</span>；如果域名后有端口，请加上端口号。</p>
 		<p class="comment" v-if="!supportWildcard">只支持普通域名（<code-label>example.com</code-label>、<code-label>www.example.com</code-label>）。</p>
 		<div class="ui divider"></div>
 	</div>