A locating and displaying method upon a specific video region of a computer screen comprises the steps of: capturing a plurality of computer screens during a predetermined time period; comparing one computer screen with the following computer screen to locate a plurality of screen differences, in which every single screen difference includes at least one different region; judging a respective position of every individual different region of each screen difference so as to locate an object window containing the different region; determine one object window as a video region by comparing a size or an appearance time of the object window; capturing a film of the video region; forwarding the film to a distant displayer; and then the displayer broadcasting the film on a display.