Paints cannot play a good effect for allotype junction of steel structure at atmospheric zone, because of the complex structure. The oxidative polymerization coated anticorrosion technology has excellent performance for allotype junction of steel structure. Oxidative polymerization coated anti corrosion technology consists of three closely linked protection layers , followed by anticorrosion grease, anticorrosion tape and outer protective agent.Anticorrosion grease can change the rust into ferrous oxide film, the outer side of anticorrosion tape has good UVresistant property because of contacting with the air and forming oxidative polymerization film, the inner side of anticorrosion tape pastes the steel structure surface and keeps the tape soft. So we call these kinds of materials anticorrosion paint that can be stuck on. Oxidative polymerization coated anticorrosion technology is simple construction process, saving construction time, with effective protection and long life, has proven to be suitable anticorrosion technology to solve the atmospheric corrosion problem of key part of steel structure.