Based on the high-speed train spectrum technology platform and series models developed by demand, on the basis of the characteristic similarity analysis to build a high-speed train bogie assembly Computer Aided Process Planning（CAPP） system, the high-speed train bogie rapid variant design of assembly process is realized. The system first type bogie could be derived from the computer aided design （CAD） model and the model design and process characteristics (that is the assembly feature), and then on the basis of design features and assembly, the template projects and instance similarity analysis were carried out to get higher similarity template models. Finally on the basis of the template variant accordingly, new car bogie variant assembly process planning is generatuated.