The disclosure relates to a method and device for displaying a floating window. The method includes monitoring an amount of floating windows that are created on a desktop for respective ones of a plurality of applications; determining that there is more than one of the plurality of applications for which a floating window is created on the desktop; forbidding permissions of multiple floating windows based on the determination; launching a system floating window; hiding and containing the multiple floating windows in the system floating window; receiving an activating instruction for the system floating window; extending and displaying the multiple floating windows contained in the system floating window; receiving a selection instruction for the multiple floating windows; displaying a selected floating window of the multiple floating windows; allowing a permission of the selected floating window; and masking a permission of the system floating window.