diff --git a/.github/ISSUE_TEMPLATE/gcr-io_porter.md b/.github/ISSUE_TEMPLATE/gcr-io_porter.md
index 9ffa1ef..a9fca92 100644
--- a/.github/ISSUE_TEMPLATE/gcr-io_porter.md
+++ b/.github/ISSUE_TEMPLATE/gcr-io_porter.md
@@ -7,6 +7,8 @@ assignees: ''
 
 ---
 
+**为了防止被滥用，目前仅仅支持一次同步一个镜像**
+
 标题必须为 `[PORTER]镜像名:tag` 的格式，例如`[PORTER]k8s.gcr.io/federation-controller-manager-arm64:v1.3.1-beta.1`,`[PORTER]gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1`
 
 issues的内容无所谓，可以为空