diff --git a/src/toast/index.less b/src/toast/index.less
index 92a4d1d07..1f37f5b82 100644
--- a/src/toast/index.less
+++ b/src/toast/index.less
@@ -38,7 +38,8 @@
   // allow newline character
   white-space: pre-wrap;
   text-align: center;
-  word-wrap: break-word;
+  // https://github.com/youzan/vant/issues/8959
+  word-break: break-all;
   background-color: var(--van-toast-background-color);
   border-radius: var(--van-toast-border-radius);