Steel structure protection includes fire prevention, anti-corrosion, and rust prevention. Generally, anti-corrosion treatment is not required after fireproof coating treatment, but anti-corrosion treatment is still required in buildings with corrosive gases. There are many types of fireproof coatings in China, such as TN series, MC-10, etc. Among them, MC-10 fireproof coatings include alkyd enamel, chlorinated rubber paint, fluororubber coating, and chlorosulfonated coating. Suitable coatings and coating thicknesses should be selected during construction according to the steel structure type, fire resistance rating requirements, and environmental requirements.