Adopting the models of chemical non-equilibrium and radiant nonequilib-rium，according to simplified or full Naver-Stokes equation，We numerically simulates whole target flow field and electronic-radiant characteristic of small blunted cone having ablative material injection with the purpose of providing the aero-physics data for protective design. The simulative results of flow field are compared with experimental data and good agreements are found. The numerical results show that the wall ablative material injection and the wall catalytic characteristic are considered，and have orders influence to electronic number density.