The invention provides a primary/secondary type driving system of binary-vehicle, belonging to the technical field of vehicle manufacture, and solving the problem of the existing driving system incapable of controlling drive when the binary vehicles separate or integrate. The primary/secondary type driving system of binary-vehicle comprises an electronically controlled primary driving system and an electronically controlled secondary driving system, the electronically controlled primary driving system is arranged on the primary mono-vehicle and can independently control the primary mono-vehicle to run, the electronically controlled secondary driving system is arranged on the secondary mono-vehicle and can independently control the secondary mono-vehicle to run; when the primary mono-vehicle and the secondary mono-vehicle are integrated into a normally-working binary-vehicle, the primary driving system and the secondary driving system are mutually connected, and the primary driving system and the secondary driving system respectively generate an integration triggering handshake signal, so that the primary driving system controls the secondary driving system to realize the drive control of the integral vehicle. The invention has the advantages of simple structure, convenient control, high operability, good safety, etc.