In this article, galavanic corrosion test of T2/TC4 galvanic couple in static artificial seawater was carried out. The dissolution rate of copper ion and the behaviors of T2/TC4 galvanic couple in static artificial seawater was analyzed by electrochemical workstation, ICP, SEM, EDS and XRD. The results shows that the reaction is intensively when galvanic corrosion occurs between T2 alloy and TC4 alloy, T2 alloy acts as anode and the corrosion rate is increase, TC4 alloy acts as cathode. Compared with the corrosion of T2 alloy, the dissolution rate of copper ion by T2/TC4 galvanic corrosion has been enhanced several times and maintained at around 160μg/(cm2.d), Therefore marine antifouling requirements for inhibiting the attachment of great majority can be achieved. The corrosion product is mainly cuprous oxide when corrosion occurs in T2 sample, No corrosion products are covered on the surface of T2 sample after galvanic corrosion with TC4 alloy.