In order to improve the durability of the cable, combined with the experience of product development and engineering application, the anticorrosion requirements of the cable system were put forward according to the fib2005, PTI2007 and CIP2002 international standard for the cable system, including the anticorrosion structure of the cable body and the cable anchor The sealing structure and watertight performance, surface anticorrosion of cable anchors and other links are studied, and the protection treatment in the construction and operation of the cable is required to ensure that the OVM250 steel strand cable system meets the requirements of the specification and the expectation of the service life of the project.