A finite volume program for the calculation of plane cascade flow at large angle-of-attack is developed. The Osher-Chakravarth 3rd order TVD scheme is used tio ensure the high accuracy, and the technique of diagonalization is adopted to fast the convergence speed. Two kinds of non-reflective boundary conditions are explored at the inlet and outlet boundarise, which can reduce the scale of computational domain and avoid too many grid points for simulations of flow separation and shock waves.