diff --git a/src/main.rs b/src/main.rs
index 19f753b..9a74dc1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -35,7 +35,7 @@ fn main() -> io::Result<()> {
 
     match cli.hash {
         Some(hash_value) => {
-            if hex_result == hash_value {
+            if hex_result.to_lowercase() == hash_value.to_lowercase() {
                 println!("SHA1值匹配");
             } else {
                 println!("SHA1值不匹配");