A method and an apparatus for adjusting sizes of split-screen windows including: detecting a first operation on a first display widget, in response to a first split-screen window and a second split-screen window for an application being displayed in a display area; displaying a second display widget, in response to the first operation being detected, wherein the second display widget comprises at least one icon and the at least one icon indicates a ratio of a size of the first split-screen window to a size of the second split-screen window; detecting a second operation on the at least one icon; and adjusting the size of the first split-screen window and the size of the second split-screen window based on the ratio indicated by the at least one icon, in response to the second operation being detected.