diff --git a/components/date-picker/style/Calendar.less b/components/date-picker/style/Calendar.less
index 6550e7073c..1acfe045a9 100644
--- a/components/date-picker/style/Calendar.less
+++ b/components/date-picker/style/Calendar.less
@@ -321,7 +321,7 @@
     .btn;
     .btn-primary;
     .button-size(@btn-height-sm; @btn-padding-sm; @font-size-base; @border-radius-base);
-    line-height: @line-height-base;
+    line-height: @btn-height-sm - 2px;
 
     &-disabled {
       .button-color(@btn-disable-color; @btn-disable-bg; @btn-disable-border);