The invention discloses an Internet of Vehicles road early warning method and an Internet of Vehicles road early warning system based on Beidou. The Internet of Vehicles road early warning method comprises steps that fixed point position data and driving position data are acquired, and are returned to a server; a vehicle driving direction, a vehicle driving speed, and a vehicle position change are determined; an abnormal position is compared with the fixed point position. The Internet of Vehicles road early warning system comprises an on-board Beidou positioning module, an on-board GPRS module, an on-board control module, a direction determining module of a server end, an on-board Beidou short message transmission module, the speed determining module of the server end, an on-board early warning information Beidou transmission module, an on-board early warning information Beidou receiving module, an on-board early warning information GPRS transmission module, an on-board early warning information GPRS receiving module, an abnormal position determining module, a comparison module, a first marking module, and a second marking module. The Internet of Vehicles road early warning method and the Internet of Vehicles road early warning system have advantages of rapid response, safety, high efficiency, strong cooperation early warning capability, and low early warning costs on aspects of driving state monitoring, driving safety guarantee, and traffic accident prevention.