diff --git a/docs/system-design/security/jwt-intro.md b/docs/system-design/security/jwt-intro.md
index 63cf0038..c0110b70 100644
--- a/docs/system-design/security/jwt-intro.md
+++ b/docs/system-design/security/jwt-intro.md
@@ -1,5 +1,5 @@
 ---
-title:JWT 基本概念详解
+title: JWT 基本概念详解
 category: 系统设计
 tag:
   - 安全