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Seismic motions may cause the liquefaction of saturated loose sandy soils. The existence of saturated sandy soils in Caspian Sea beaches and the high-underground water level close to the ground surface makes the region susceptible for liquefaction phenomenon under earthquake effects. According to earthquake background and existence of large and small faults in this region, it is essential to find a solution to prevent the liquefaction phenomenon or to reduce its dangerous effects under seismic motions. In this paper, by using the geotechnical data obtained by field and laboratory of the region, effects of stone columns in reducing the potential of liquefaction are studied. Numerical analysis for implementation of stone columns in regions with a high risk of liquefaction revealed high efficiency of this technique for decreasing the risk of liquefaction