The invention relates to a road side business supporting system and method of an intelligent network connection automobile. The system comprises a cooperation controller, the cooperation controller is connected with traffic sensing equipment, traffic control equipment, auxiliary positioning equipment, lane communication equipment and networking equipment and is used for realizing analysis, processing and fusion of traffic sensing data, traffic control data, auxiliary positioning data and lane communication data and providing business support for the intelligent network connection automobile; the traffic sensing equipment, the traffic sensing equipment is used for acquiring the traffic sensing data and sending the traffic sensing data to the cooperation controller; the traffic control equipment, the traffic control equipment is used for acquiring the traffic control data, sending the traffic control data to the cooperation controller and controlling a state of traffic signals; the auxiliary positioning equipment, the auxiliary positioning equipment is used for acquiring the auxiliary positioning data and sending the auxiliary positioning data to the cooperation controller, the lane communication equipment, the lane communication equipment is used for carrying out information interaction between the cooperation controller and vehicle equipment,; and the networking equipment is used for realizing communication between the cooperation controller and a traffic information center or other systems.