A vehicular screen central control system includes a processor, an information acquisition module communicatively coupled to the processor, a rotator communicatively coupled to the processor, and a display device coupled to the rotator. The display device includes a first display area and a second display area. The information acquisition module is configured to acquire a light intensity signal received by the display device. The processor is configured to control the display device to display and analyze the light intensity signal to transmit an instruction to the rotator. The rotator adjusts an angle between the first display area and the second display area according to the instruction.