页面滚动键是电脑键盘上Page Up键和Page Down键两个键的合称。

页面滚动键可以代替鼠标上的滚轮按钮。

Page Up键

若按下Page Up就将光标或页面上移一个画面。

Page Down键

若按下Page Down就将光标或页面下移一个画面。

The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards.

The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. In word processors, for instance, they may jump by an emulated physical page or by a screen view that may show only part of one page or many pages at once depending on zoom factor. In cases when the document is shorter than one screenful, Page Up and Page Down often have no visible effect at all.