CAN (Controller Area Network) bus topology structure and method for starting vehicle by using same

The invention discloses a CAN (Controller Area Network) bus topology structure comprising a high-speed network and a low-speed network and also comprising a starting network, wherein the starting network respectively carries out CAN communication with the low-speed network and the high-speed network through a gateway; the starting network comprises a vehicle body control module, an intelligent key system controller and a steering wheel lock controller which are respectively connected to a CAN bus of the starting network; and the vehicle body control module is also connected with the CAN bus of the high-speed network. The invention also provides a method for starting a vehicle by using the topology structure. In the CAN bus topology structure and the method for starting the vehicle by using the topology structure, the vehicle body control module, the intelligent key system controller and the steering wheel lock controller relevant to entire vehicle burglary preventing, entire vehicle electrifying and entire vehicle starting are connected to the CAN bus of the starting network, therefore, the failure ratio of the entire vehicle burglary preventing, the entire vehicle electrifying and the entire vehicle starting is effectively reduced; and meanwhile, the vehicle body control module is also connected with the CAN bus of the high-speed network, thus, the failure ratio of the entire vehicle burglary preventing, the entire vehicle electrifying and the entire vehicle starting is further reduced.