First, open Word document, select the menu bar "Insert--header and footer--header";
Second, according to your personal preferences, you can choose Word from the header, you can also customize a header;
Third, then in the inserted header input you want to set the page content, and then double-click the Word text content can save the header;
If you think the header position is not appropriate, click the small arrow under Page layout.
Five, in the pop-up window to switch to the "layout" option, then set a suitable header height can be.