Communication state control method and device of vehicle-mounted unit, and medium

The invention discloses a communication state control method and device of a vehicle-mounted unit and a medium. The method comprises the steps that after a whole vehicle is powered on, environment information of the environment where the vehicle is located is monitored in real time; according to the environment information, whether the environment where the vehicle is located meets a preset ETC charging condition or not is judged; if the environment where the vehicle is located meets the preset ETC charging condition, the vehicle-mounted unit is controlled to be in a communication allowing state; and if the environment where the vehicle is located does not meet the preset ETC charging condition, controlling the vehicle-mounted unit to be in a communication forbidding state. According to the embodiment of the invention, the ETC recognition accuracy can be effectively improved, and the passing efficiency of vehicles is improved. 本发明公开了一种车载单元的通讯状态控制方法、装置和介质。所述方法包括：在整车上电后，实时监测车辆所处环境的环境信息；根据所述环境信息，判断所述车辆所处环境是否满足预设