Plating Pt/Ti anode is widely used in seawater cathodic protection. Plating Pt/Ti anode has excellent chlorinated property, variable size, light weight, suitable for ocean operation. Pt/Ti anode was prepared in acidic bath which main salt is two nitroso diamine platinum, and the electrochemical performance of Pt/Ti anode in artificial seawater was tested. The surface of the Pt/Ti electrode is bright, the coating and the matrix are bonded firmly, the coating thickness can up to 5-10um, the electrochemical performance is stable in the artificial seawater, the consumption rate is 6.0225mgA, a. Plating PT/Ti electrode is easy to make, the thickness of the coating is controllable, size is variable, weight is light, suitable for seawater operation.