Abstract: The analysis of angular distributions of two elastic scattering processes 4He+90Zr (at laboratory energies 21, 23 and 25 MeV) and 44He+90Zr (at laboratory energies 21, 23.4 and 25 MeV) using semi classical model based on strong absorption phenomenon. The parameterized scattering matrix of McIntyre Model and Regge pole model are used to reproduce the cross-sections of the experimental data for the two elastic scattering processes at forward and backward angles. Some geometrical parameters are extracted for colliding nuclei together with total reaction cross sections.