The method of plating a stainless steel substrate including depositing a first plating metal layer over the stainless steel substrate), forming an interdiffusion layer in which elements of the stainless steel substrate and elements of the first plating metal layer interdiffuse, by applying a heat treatment to the stainless steel substrate coated by the first plating metal layer, and coating a second plating metal layer over the surface of the stainless steel substrate over which the interdiffusion layer is coated.