diff --git a/src/main.rs b/src/main.rs
index d359ae7..e5d071c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -568,7 +568,7 @@ fn main() {
     // println!("{:?}", bt);
 
     // ---------------------------
-    println!("---------------------------");
+    println!("------------if let 条件表达式---------------");
     let favorite_color: Option<&str> = None;
     let is_tuesday = false;
     let age: Result<u8, _> = "34".parse();