diff --git a/src/design/ant/index.less b/src/design/ant/index.less
index fc9349ced..23f3ac1cb 100644
--- a/src/design/ant/index.less
+++ b/src/design/ant/index.less
@@ -63,3 +63,7 @@ span.anticon:not(.app-iconify) {
   border-top: 0 !important;
   border-left: 0 !important;
 }
+
+.ant-calendar-picker {
+  width: 100%;
+}