Abstract: In the technical field of urban rail transit train communication network, network reorganization through WTB (wire train bus) to realize vehicle marshalling change is a commonly adopted technical scheme. In order to realize the network reorganization based on MVB (multifunction vehicle bus), the technical scheme of network auto-adaptive reorganization of MVB is expounded from aspects including connection mode of network reorganization, functionality of autoadaptive network system, configuration process, MVB networking control device and MVB dynamic address allocation. The technical scheme of network auto-adaptive reorganization is tested and verified from the function of auto-adaptive networking control unit. The test results show that the MVB-based network auto-adaptive reorganization technical scheme can conveniently realize the vehicle networking control, solve the key problems in the networking of multi-unit vehicle networks and configure flexibly the train communication network system.