With the rapid development of international trade and shipping industry,pollution caused by exhaust emissions from ships using petroleum products as fuel is becoming more and more serious,and sulfide is one of the main pollutants.Ship desulphurization equipment is widely used in exhaust gas treatment as an effective means to reduce sulfide pollution.However,high temperature,strong acid and other bad working conditions will accelerate the corrosion and aging of desulfurization.In this paper,the theory of ship desulfurization system and corrosion environment were analyzed,and the application prospect of anticorrosive coating in ship desulfurization unit was discussed from the technical point of view.