Abstract: 304 stainless steel foil plate was treated by pulse current with different current（0-25 A）, the mechanical properties and microstructure of thel foil plate after different processes treatment were studied by electronic universal testing machine and scanning electron microscope. The results show that under the action of electric current, the fracture dimples of the stainless steel foil plate are gradually enlarged and deepened from the small and shallow in rolling state, the fiber striations in the thickness direction are relieved, the grains are gradually clear and the microstructure is more uniform. At the same time,with the increase of current, the flow stress, tensile strength and Vickers hardness of the foil are gradually reduced, the elongation is increased, and the mechanical properties are improved. When the current intensity is 25 A, the effect is best, the elongation of the original state increases from 30.1% to 43.7%, the tensile strength decreases from 985 MPa to 626 MPa, and the Vickers hardness decreases from 479 HV to 421 HV.