diff --git a/style/components/form.less b/style/components/form.less
index 118fa536f7..90bbf942d9 100644
--- a/style/components/form.less
+++ b/style/components/form.less
@@ -256,10 +256,6 @@ form {
     vertical-align: middle;
   }
 
-  .@{calendar-prefix-cls}-picker-input {
-    width: 100%!important;
-  }
-
   .@{css-prefix}form-text {
     display: inline-block;
   }