diff --git a/packages/dialog/index.pcss b/packages/dialog/index.pcss
index b37bce78..31144751 100644
--- a/packages/dialog/index.pcss
+++ b/packages/dialog/index.pcss
@@ -15,6 +15,7 @@
   transform: translate3d(-50%, -50%, 0);
   color: #333;
   opacity: 0;
+  z-index: 1;
 }
 
 .zan-dialog--mask {
@@ -26,6 +27,7 @@
   background-color: rgba(0, 0, 0, 0.6);
   transition: .3s;
   display: none;
+  z-index: 1;
 }
 
 /* 弹出层内容 */