A smart ambient light control system and control method based on a smart glass. The system comprises: the smart glass, a photosensitive module, a control module, and a communication module. The control module is configured to: determine a light passing rate, an operation mode, a working mode, and a display style of the smart glass, the display style comprising a display graphic, a dynamic image, and/or text and corresponding display starting positions; and control the smart glass according to the light passing rate, the display style, the operation mode, and the working mode by means of the communication module. The smart light control effect is improved, a plurality of control modes are provided, and user experience is improved.