At present, marine engineering, transportation, energy, petrochemical industries and other industries are developing rapidly, and surface corrosion protection has become a pain point in the industry. According to reports, from a global perspective, all materials lose about 1% of their weight due to corrosion each year, and the economic loss caused by corrosion It accounts for about 4% of GDP. This loss is more serious in tropical and marine environments. At present, my country’s loss caused by ocean corrosion alone exceeds 3% of GDP. The assessment report on direct and indirect losses caused by corrosion shows that the transportation and electronics industries have been hit. For the two serious industries, the anti-corrosion road industry also has a long way to go. The great harm of corrosion is not only reflected in economic losses, it can also cause heavy casualties, environmental pollution, waste of resources, hinder the development of new technologies, and promote the depletion of natural resources.