Based on the distributed parellel computing platform with the LINUX+MPI parellel environment, a parellel numerical computing method with finite volume method(FVM), OC-TVD scheme, B-L turbulence model and domain decomposition method was developed to solve the 3-D compressible Reynolds-averaged N-S equations. This method was used to simulate the flow field of the hypersonic waverider shape vehicle. The numerical results indicate that the shock across the zone boundary is continuous and the parellel speedup ratio reachs 6.8 when 8 cpu is in using.