Abstract: In this paper,a wave energy power observation buoy is divided into different fouling areas by analyzing its working principle,motion characteristics and corrosion environment of each system. Firstly,through considering the current anti-corrosion methods,the complex marine corrosion environment of buoys,cost and construction efficiency,a corrosion protection method combining anti-corrosion paint coating and catholic protection is proposed. Based on which,an anti-corrosion system with impressed current catholic protection and key parameters are designed. Furthermore,numerical simulations are carried out and reveal that better anti-corrosion effect can be achieved by setting the above anti-corrosion system along the flank of the main buoy.