diff --git a/sa-token-doc/plugin/api-sign.md b/sa-token-doc/plugin/api-sign.md
index 0267f3e6..47b85b84 100644
--- a/sa-token-doc/plugin/api-sign.md
+++ b/sa-token-doc/plugin/api-sign.md
@@ -1,5 +1,9 @@
# API 接口参数签名
+
+ 观看本节视频讲解（B站：抓蛙师）
+
+
在涉及跨系统接口调用时，我们容易碰到以下安全问题：
- 请求身份被伪造。
diff --git a/sa-token-doc/static/doc.css b/sa-token-doc/static/doc.css
index ba38387c..eb552a68 100644
--- a/sa-token-doc/static/doc.css
+++ b/sa-token-doc/static/doc.css
@@ -383,6 +383,12 @@ body {
background-size: 18px 18px;
background-image: url(icon/code.svg);
}
+#main .case-btn,#main .case-btn-video{
+ background-color: #ECF5FF;
+ color: #1979DA;
+ border: 1px #1D7CF0 solid !important;
+ background-image: url(icon/video.svg);
+}
#main .dt-btn{display: none;}
diff --git a/sa-token-doc/static/icon/video.svg b/sa-token-doc/static/icon/video.svg
new file mode 100644
index 00000000..af1ee202
--- /dev/null
+++ b/sa-token-doc/static/icon/video.svg
@@ -0,0 +1 @@
+
\ No newline at end of file