In this study, we investigate the behaviors of a superconducting multi-strips system when placed in a perpendicular alternative magnetic field and the surface effects of the system arising from the edges barriers. We obtain the magnetic field and current density profiles and the magnetization curve for multi-strips systems, and we show that by raising the number of the superconducting strips in a given width which gives rise to the enhancement of the geometrical edge barriers, we can almost prevent exiting magnetic flux of the system, as we expected. So there will be a magnetic hysteresis in the system that increases by increasing strip number. Adding the no. of superconducting strips or slots in a given width enhance hysteresis loop too. Also, we study the role of air gaps in the exclusion of magnetic flux by calculating the so-called "effective area". The obtained graphs clearly show the key role of air gaps in the exclusion and pushing the magnetic field out of the superconducting multi-strips system.