Provided are a window switching method, and device and storage medium thereof. The method comprises the steps: obtaining a first pre-reading keyword meeting the requirement in all contents on a page opened through a current window, determining a first pre-reading URL corresponding to the first pre-reading keyword, utilizing the pre-reading window to load a pre-reading page corresponding to the first pre-reading URL, and switching the pre-reading window loaded with the pre-reading page to the current window when an instruction of entering the pre-reading page is received. An improved pre-reading function can be achieved, and the technical problem of low user experience caused by the fact that contents on a pre-reading page cannot be displayed completely after switching to the pre-reading page is further solved.