A novel material, uncoated polyamline/bentonite layered nanocomposits has been prepared successfully and characterized by XRD、FTIR、CV、TGA.Experiments suggest that it still has the layered structure of bentonite, but has larger interlayer space. The properties of both polyaniline and bentonite are reserved.This material has potential applications as electrode material for electrochemical battery and electrode modifyiny materials.