A display apparatus with dynamic blinking backlights, a control method and a device thereof are provided. The dynamic blinking backlight control method for dynamically controlling the lighting status of the backlights of the display panel includes the following steps. First, the motion condition of a frame to be displayed on the display panel is detected for obtaining a motion detection result. The scanning frequency is determined in accordance with the motion detection result. Also, the lighting status of the backlights is controlled sequentially and respectively in accordance with the determined scanning frequency.