The invention discloses a method, a system and equipment for watching different pictures simultaneously on a same screen, wherein the method comprises the following steps: image frames of a plurality of pictures, which are based on frame alternation and are arranged at a display end, are transmitted to a display screen to be output and displayed, and synchronizing signals of the plurality of pictures based on the frame alternation are transmitted to a plurality of glasses ends; and at each glasses end, the synchronizing signals of a picture corresponding to the glasses end are extracted from the synchronizing signals of the plurality of pictures, lens control signals are generated according to the extracted synchronizing signals and then are converted into lens driving signals, and the lens driving signals are used for controlling two glasses lenses at the glasses end to switch between the opening state and the closing state. By adopting the technical scheme, the invention enables a plurality of persons to watch videos with different content simultaneously on the same screen.