Bridge cables play a very important role in the structure, so owners have extremely high durability requirements for them. Currently, high-density polyethylene sheath materials are widely used for surface protection of the main load-bearing bars of cables, and the anti-corrosion performance of the outer sheath is the first line of defense related to its lifespan. This article analyzes and tests the problems that occur in the coil of the cable from many factors that affect its anti-corrosion performance, Propose measures and opinions to ensure the anti-corrosion durability of the cable