The embodiment of the invention discloses an information processing method and system, a central control device and a computer storage medium. The method comprises the steps that the central control device receives a first control instruction; the central control device acquires first data source information corresponding to a first data source identifier according to the first control instruction; the central control device controls a display device corresponding to the identifier of the display device to be displayed to display the first data source information according to the first controlinstruction; the central control device receives a second control instruction; the central control device acquires second data source information corresponding to the second data source identifier according to the second control instruction; and the central control device controls the display device corresponding to the identifier of the display device to be switched to display the second data source information according to the second control instruction. According to the embodiment of the invention, a part of display devices in a classroom can be switched and displayed as different discussion group related contents, and the convenience of grouped discussion is improved.