Abstract: This application provides a screen wakeup method and apparatus. The screen wakeup method includes: obtaining M image frames, where each image frame includes a first face image, and M is an integer greater than or equal to 1; determining, based on a preconfigured neural network, whether each first face image matches a preset face image that belongs to a user who is gazing at a screen of a device; and when each first face image matches the preset face image that belongs to the user, switching the screen from a screen-off state to a screen-on state. According to the technical solutions provided in this application, accuracy of screen wakeup of a device can be improved without significantly increasing costs.