Abstract: In this paper，all of factors which include vehicle parameter, Explosion-proof power battery ,Explosion-proof drive system and transmission type affect the range of Explosion-proof pure electric Vehicle are analyzed. The methods and results which can improve the range of Explosion-proof pure electric Vehicle on the condition of lower energy density of battery. And based on a certain type of explosion-proof pure electric Vehicle, complete the combination property test by vehicle test stand and the VehSpy3 upper system, calculation of the range of equal speed and the range of working conditions in Wang-jailing subsidiary transport. The results show that the method can effective promote the range of Explosion-proof pure electric Vehicle and provide the theoretical Basis for the development and popularization of Explosion-proof pure electric Vehicle.