The invention discloses a traffic road network vehicle distributed control method which comprises the steps of (1) judging an area where a vehicle is located, (2) determining the following behavior ofthe vehicle, (3) constructing a two-dimensional road network vehicle group geometric topology configuration, (4) judging whether the actual following distance of the vehicle in the two-dimensional road network vehicle group geometric topology configuration is greater than a first distance threshold or not, going to step (5) if so, otherwise, going to step (6), (5) splitting a current two-dimensional road network vehicle group geometric topology configuration according to the area where the vehicle is located, (6) judging whether the distance of the two-dimensional road network vehicle group geometric topology configuration in a geometric position is smaller than a second distance threshold or not, and combining if so, (7) obtaining an information neighborhood vehicle set of the two-dimensional road network vehicle group geometric topology configuration, and (8) designing a distributed vehicle group linear feedback controller and solving an expected acceleration of the vehicle to control the longitudinal motion of a corresponding vehicle. According to the method, the computing resources are saved, and the overall traffic efficiency is improved.