diff --git a/packages/vant-cli/site/desktop/components/Header.vue b/packages/vant-cli/site/desktop/components/Header.vue
index 7bdea680e..082a219d9 100644
--- a/packages/vant-cli/site/desktop/components/Header.vue
+++ b/packages/vant-cli/site/desktop/components/Header.vue
@@ -138,7 +138,6 @@ export default {
 
 .van-doc-header {
   width: 100%;
-  box-shadow: 0 4px 12px #ebedf0;
   user-select: none;
 
   &__top {
diff --git a/src/image-preview/index.less b/src/image-preview/index.less
index 0cf424b5f..d66da0cf3 100644
--- a/src/image-preview/index.less
+++ b/src/image-preview/index.less
@@ -52,6 +52,7 @@
     left: 50%;
     color: @image-preview-index-text-color;
     font-size: @image-preview-index-font-size;
+    text-shadow: @image-preview-index-text-shadow;
     transform: translate(-50%, 0);
   }
 
diff --git a/src/style/var.less b/src/style/var.less
index 6d3577ac0..4b7b25431 100644
--- a/src/style/var.less
+++ b/src/style/var.less
@@ -401,6 +401,7 @@
 // ImagePreview
 @image-preview-index-text-color: @white;
 @image-preview-index-font-size: @font-size-md;
+@image-preview-index-text-shadow: 0 1px 1px @gray-8;
 @image-preview-overlay-background-color: rgba(0, 0, 0, .9);
 
 // List