Based on the experiences of developing and applying fuel cell vehicles,two practical powertrain structures are compared,and it comes to the conclusion that the powertrain of PFCV is of higher efficiency,lower cost,and more safety for battery utilizing etc.Some guidelines for powertrain design are summarized.Through revealing the developing process of a given PFCV powertrain,the systematic methods for powertrain and power distribution design are introduced.With a series of verifications by simulation and experiment,the mentioned powertrain and its design and analysis methods are proved to be correct and appropriate,which is also referential to the energy distribution design of hybrid vechicles.