diff --git a/packages/theme-chalk/src/input-number.scss b/packages/theme-chalk/src/input-number.scss
index d04acd31fa..52d7953547 100644
--- a/packages/theme-chalk/src/input-number.scss
+++ b/packages/theme-chalk/src/input-number.scss
@@ -6,7 +6,7 @@
 
 @include b(input-number) {
   position: relative;
-  display: inline-block;
+  display: inline-flex;
   width: map.get($input-number-width, 'default');
   line-height: #{map.get($input-height, 'default') - 2};