This paper introduces some montmorillonite of different production technologies.Montmorillonite and pillared agents are used to synthesize the pillared montmorillonite. The pillared montmorillonite was identified by BET,IR and XDR.The result shows of pillared montmorillonite that compared with the original montmorillonite, its specific surface area and basal interlayer space are greatly increased,but its content of carbon is greatly reduced.