diff --git a/src/toast/index.js b/src/toast/index.js
index 3df45cdce..b00e0da8b 100644
--- a/src/toast/index.js
+++ b/src/toast/index.js
@@ -97,6 +97,12 @@ function Toast(options = {}) {
     ...options,
   };
 
+  if (process.env.NODE_ENV !== 'production' && options.mask) {
+    console.warn(
+      '[Vant] Toast: "mask" option is deprecated, use "overlay" option instead.'
+    );
+  }
+
   options.clear = () => {
     toast.value = false;