diff --git a/src/autocomplete.scss b/src/autocomplete.scss
index 667b2e1c..12dca8c3 100644
--- a/src/autocomplete.scss
+++ b/src/autocomplete.scss
@@ -16,7 +16,7 @@
   border-radius: $--border-radius-base;
 
   @include e(wrap) {
-    max-height: 280px;
+    max-height: $--input-autocomplete-max-height;
     padding: 10px 0;
     box-sizing: border-box;
     overflow: auto;
diff --git a/src/common/var.scss b/src/common/var.scss
index af49edc3..e54567b4 100644
--- a/src/common/var.scss
+++ b/src/common/var.scss
@@ -327,6 +327,7 @@ $--input-color-disabled: $--font-color-disabled-base !default;
 $--input-icon-color: $--color-text-placeholder !default;
 $--input-placeholder-color: $--color-text-placeholder !default;
 $--input-max-width: 314px !default;
+$--input-autocomplete-max-height: 280px !default;
 
 $--input-hover-border: $--border-color-hover !default;
 $--input-clear-hover-color: $--color-text-secondary !default;