Abstract: In this paper, the discretization error and the convergency are studied for the typical hypersonic flow over hollow cylinder flare(T2-97) using a several successive girds, and a verification procedures based on the Richardson Extrapolation are carried out for this problem. Then with the uncertainty analysis method and the experiment data, the validation procedures are also carried out. The study indicates that the typical problem's Verification and Validation work is achieved based on the existing experiment data and computational capability.