diff --git a/components/date-picker/style/index.ts b/components/date-picker/style/index.ts
index 62ef3f039d..1a79222045 100644
--- a/components/date-picker/style/index.ts
+++ b/components/date-picker/style/index.ts
@@ -625,7 +625,7 @@ export const genPanelStyle = (token: SharedPickerToken): CSSObject => {
         textAlign: 'center',
 
         '&-extra': {
-          padding: `0 ${paddingSM}`,
+          padding: `0 ${paddingSM}px`,
           lineHeight: `${pickerTextHeight - 2 * lineWidth}px`,
           textAlign: 'start',