A series of adsorbents involving modified ZSM-5,Y,MCM-41 molecular sieves were prepared by ion-exchanging method for gasoline desulfurization. The composition and specific surface area of the adsorbents were determined by XRD technique. The effect of adsorption conditions on the desulfurization performance of the adsorbents was studied. The results show that the desulfurization performance varies for different adsorbents, CuY performs the best and the optimum adsorption conditions is ambient temperature , atmospheric pressure and mass ratio of adsorbent to oil ratio of 0.15. By analyzing the varations of the adsorbent CuY through regeneration process, the mechanism of adsorptive desulfurization was investigated.