diff --git a/src/main.rs b/src/main.rs
index 3f4d744..76f2c49 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -46,8 +46,8 @@ fn main() {
             eprint!("Open Camera Error:{}", e)
         }
     }
-    let mut w = 0 as i32;
-    let mut h = 0 as i32;
+    let mut w = 0;
+    let mut h = 0;
     if camera_open {
         loop {
             // 捕获一帧图像