diff --git a/frontend/src/views/website/website/config/basic/anti-Leech/index.vue b/frontend/src/views/website/website/config/basic/anti-Leech/index.vue
index 7d654ff54..f0c655300 100644
--- a/frontend/src/views/website/website/config/basic/anti-Leech/index.vue
+++ b/frontend/src/views/website/website/config/basic/anti-Leech/index.vue
@@ -172,6 +172,7 @@ const updateDomainsString = () => {
 const initDomainList = (domainsStr: string) => {
     if (domainsStr) {
         domainList.value = domainsStr.split('\n').filter((domain) => domain.trim() !== '');
+        domainList.value = Array.from(new Set(domainList.value));
         if (domainList.value.length === 0) {
             domainList.value = [''];
         }