This article presents the results of computer modeling of scattered ions Ar+ from the stepped surface of InP ( 001) < ī10> at different values of the angle of incidence and at the E0=1 keV using the binary collision approximation method. The dependence of the energy of scattered ions on their scattering angle is obtained, and it is shown that at small angles of incidence, scattering from the ideal part of the surface is observed. Increasing the values of the angle of incidence leads to scattering of ions from an atomic step, which is modeled on the surface. The obtained results showed that when scattering a stepped surface, in the dependence of E() of scattered ions, ovals are observed corresponding to two values of energy at the same scattering angle. Also, energy spectra are obtained, which confirm that with an increase in the angle of incidence of ions, peaks are observed corresponding to specularly scattered, scattered from the end atom, and dechanneled ions.