Abstract: ZSM-5 zeolite membranes were prepared by second growth method and modified with metallic ion. XRD and SEM were applied to characterize the zeolite membranes. The separation performance of these membranes for thiophenic sulfurs from n-hexane was evaluated. The competitive adsorption of thiophenic sulfurs on these membranes was investigated by varying the loaded ions， the ion concentration and the activation temperature. The regeneration of used membranes was also investigated. Results showed that the best separation factor of sulfides amounted to 1.7 by ZSM-5 membranes loaded with 0.2 mol/L Ag+ solution. The separation performance of the membranes was the best when activated 450℃. Benzothiophene showed a strong competitive adsorption effect to thiophene. Regeneration results showed that ZSM-5 zeolite membranes have good stability.