Wanzhao chemical warm-mix agent can be divided into crystalline lubrication type, polymer type and surface active type. Compared with traditional hot-mix asphalt mixture, using Wanzhao chemical warm-mix agent can reduce the temperature of production, paving and compaction by 25 ~ 35 C, thus reducing the emission of volatile organic compounds such as carbon dioxide and nitrogen oxide generated in the mixing process, improving workers' construction conditions and effectively protecting the environment. At the same time, the reduced paving temperature can make the time-critical projects be delivered quickly.