diff --git a/src/contents/safety.tsx b/src/contents/safety.tsx
index 88dce0a5e7f267e28a9399d21d7c9bdb0e8a74fc..472454268158bc772ff0c1b97a0ce96e6bcd6a5c 100644
--- a/src/contents/safety.tsx
+++ b/src/contents/safety.tsx
@@ -135,7 +135,7 @@ Various equipment in the laboratory will undergo regular maintenance and be prom
               </Element>
 
               <Element name="section4" className="element rounded-border" id='section4'>
-              <h2>Section 4</h2>
+              <h2>Biological Safe</h2>
               <p>Content for section 4.</p>
               <div className="rounded-border">
               <h4 className="center-text">我是大帅B</h4>