Abstract: Relying on the national key R＆D program research on Forward-looking Technology of Seawater Pumped Storage Power Station,and considering the particularities of seawater environment and sea boundary,such as high corrosion of seawater and marine fouling microorganisms,this paper analyzes the protection conditions of the main parts of hydraulic structures of seawater pumped storage power stations,proposes the protection scope and applicable conditions of hydraulic structures and requirements for scientific research achievements.