Abstract: Here were introduced the main differences between the new version and the old version of the ISO 12944 series standards and at the meantime, was analyzed the environment characteristics that the steel box was in. According to the technical requirements of the new version of ISO 12944 Paints and varnishes — Corrosion protection of steel structures by protective paint systems, an environmentally friendly anti-corrosion coating system and its requirements for construction technology were recommended to ensure the long-term safety and reliable use of the steel box girder structure of the Xiamen Second East Passage Bridge.