Electronic rearview mirror display control method, device and system

The invention provides an electronic rearview mirror display control method, device and system, the method is used for an electronic rearview mirror controller, and the method comprises the following steps: obtaining video data of an electronic rearview mirror, and sending the video data to a display screen of the electronic rearview mirror for display; vehicle state information of a vehicle where the electronic rearview mirror is located is obtained; detecting whether a preset screen projection condition is met or not based on the vehicle state information; and when a preset screen projection condition is satisfied, requesting a central control controller to control a central control display screen to display a picture corresponding to the video data. By adopting the method and the device, screen projection trigger detection is performed on the basis of analyzing the vehicle state information, screen projection is triggered when the screen projection condition is met, and the video data of the electronic rea