Pion-proton scattering at 1.4 Bev observed by Eisberg et al. is analyzed in a phenomenological way. Interpreting the peak in forward direction as “shadow scattering” and analyzing this angular distribution, we obtain the result which agrees fairly well with the experimental one. By this method, moreover, it is found that the partial waves of l = 0, 1, 2 and l = 1, 2, 3, 4 are mainly responsible to the elastic and production cross sections, respectively.