Display control method and system and vehicle

The invention provides a display control method and system and a vehicle, the method is applied to the display control system, the display control system comprises an IVI unit and a CMS unit, the IVI unit comprises a vehicle-mounted display screen and a vehicle-mounted controller, the method comprises the steps that the vehicle-mounted display screen displays a rearview mirror control page, and the rearview mirror control page comprises at least one control button; obtaining a trigger operation for the at least one control button; in response to the trigger operation, the vehicle-mounted controller generates a control instruction according to the trigger operation and sends the control instruction to the CMS unit; and the CMS unit adjusts the running state of the CMS unit according to the control instruction. The problems that the occupied space is large and operation is inconvenient due to the fact that a CMS is controlled through a physical key are solved, and the control convenience of the electronic rearv