First, use Excel to adjust the open form to a screen size; Then press ALT+Print Scrn on the keyboard to save this picture in the memory (after pressing the key, you can't see any response from the computer); Then open the drawing that comes with Windows, press Ctrl+V, paste the contents of the clipboard into the drawing, handle it properly, and you can save it as a picture file. Then it can be made into desktop wallpaper.