Embodiments of the present application provide a screen transmission method, a vehicle-mounted bracket, and a storage medium. At least one mobile terminal existing around that vehicle-mounted bracketis first checked in an embodiment of the present application; Then, according to the variation of magnetic field strength between the mobile terminals and the vehicle-mounted bracket, the target mobile terminal is determined. Thereafter, when it is determined that the target mobile terminal is fixed on the vehicle-mounted bracket, a screen transfer operation is performed between the vehicle-mounted bracket and the target mobile terminal based on the communication connection between the vehicle-mounted bracket and the target mobile terminal. In this embodiment, based on different application scenarios, the screen display information between the vehicle-mounted bracket and the target mobile terminal can be transmitted to each other, so as to meet different application requirements of the vehicle-mounted bracket and improve the user experience.