An air mouse mode implementation method includes establishing, by an electronic device, a communication connection to a stylus through BLUETOOTH, sending, by the electronic device, notification information to the stylus through the communication connection when detecting a screen casting event of the electronic device, where the notification information instructs to enter an air mouse mode, receiving, by the electronic device, a determining instruction from the stylus through the communication connection, entering, by the electronic device, the air mouse mode based on the determining instruction, and modifying, from an arrow icon to a dot icon and by the electronic device, an indication icon corresponding to the stylus.