The inelastic scattering of pion on Carbon 12 is investigated under the impulse approximation by using a simple nuclear model. The cross sections are calculated for the excitation of the nuclear levels with 4.4 MeV(T = 0), 9 MeV (T = 0) and 15 MeV (T = 1) in the energy range of incident pion from 120 to 280 MeV, and are compared with experiments. Even the simple model for the reaction process gives good results.