The corrosion of waterproof sleeve of bridge boom is a very important problem that must be considered in bridge construction. The bridge cable is exposed to the natural environment for a long time, in addition to being corroded by the atmospheric environment all the year round, it is also eroded by corrosive substances such as SO42- and Cl- in the coastal environment. As the connection point between the cable and the bridge, the service life of the waterproof jacket of the bridge is very important. Because the waterproof sleeve can not be replaced, once the waterproof sleeve is seriously corroded, it must be all removed and replaced, and the project is huge, which not only needs to interrupt the traffic, but also will cost a lot of money. In order to avoid unnecessary loss, the waterproof sleeve of the derrick of the bridge was coated with oxidation polymerization and anticorrosion.