The invention discloses a bipartite graph based in-vehicle network distributed storage method. According to the bipartite graph based in-vehicle network distributed storage method, a distributed storage problem is firstly modeled, and bipartite graph matching is performed, so that optimal in-vehicle network distributed storage of in-vehicle request identification information sent by each in-vehicle node can be achieved under different conditions, and in-vehicle network can respond to maximum in-vehicle request identification information; subsequently, repeated network information stored by roadside units is cleared, resource waste generated by the fact that multiple roadside units respond to the same in-vehicle request identification information is avoided, and meanwhile, in-vehicle request identification information which is met is not affected; finally, in-vehicle request identification information which is not met is collected, and secondary allocation is performed on spare storage space obtained by clearing the roadside units until each roadside unit has no spare storage space, or all the in-vehicle request identification information received by the roadside units is responded, or remaining in-vehicle request identification information cannot be met; a storage resource utilization rate and a data response data are increased, and data service qualities of an in-vehicle network are guaranteed.