With the rapid development of marine ports, terminals, offshore wind power and shipbuilding industry, the demand for concrete and steel structures in marine engineering is getting bigger and bigger. The durability and reliability of reinforced concrete structure is an important quality indicator for construction projects, and corrosion is an important factor affecting it, in the actual project, the various effects brought about by corrosion is one of the most important concerns of construction engineers. Long-term immersion in seawater or in humid corrosive environments can be damaged by environmental agents such as chloride ions, sulphate ions and CO2, so practical anti-corrosion measures can be used to ensure and extend the service life of these infrastructures.   We take advantage of the permeability of concrete and use epoxy resin protective coatings to penetrate into the concrete surface to a certain depth to block the pores completely or form a continuous film on the surface to close the pores, so that the concrete surface can be effectively protected.   Epoxy resin coating can be cured at room temperature, the cured coating film has good adhesion, bonding, while having good mechanical properties and corrosion resistance. As an excellent reinforcing and protective coating, epoxy resin coating has been widely used in the protection of reinforced concrete structures at home and abroad.   Epoxy resin protective coating performance characteristics Good adhesion with concrete Good resistance to acid and alkali corrosion Resistance to salt water immersion Good abrasion resistance Curing at room temperature, good constructability Good sealing and impermeability to concrete.