The steady aerodynamic coefficient and pitching dynamic derivative of blunted conical models in hypersonic flow was validated by using implicit scheme, with the technology of the dual time stepping, rigid rotary grid deformation and least square method. Compared with the results from experiments and engineering method, the influence of the pitching dynamic derivative with different grid, bluntness ratio, angle of attack and the center of the gravity was investigated. Moreover, some of the key differences of the dynamic derivative results were derived from using different schemes, including high-order WENO and WNND schemes. The result shows that the viscid resolution of the scheme is the main source of the difference.