High entropy alloys are more corrosion resistance than 316L stainless steel HEA are used as implantation material Because its unique properties and better corrosion resistances behaviors. The improved corrosion behavior could be attributed to the different chemical composition as well as the formation of a unique high entropy atomic structure with a maximum degree of disorder. It is also possible to achieve high-hardness and high-abrasion performance at high temperature, microstructure and properties of several HEA. High entropy alloys are prepared by various methods such as powder metallurgy laser cladding etc, are discussed. The corrosion resistance of HEAs and its applications also discussed.