High-quality polycarboxylate superplasticizer, with light brown or colorless liquid, has good stability and no precipitation at low temperature. It also has features such as green environmental protection, non-toxic and harmless, conducive to the preparation of green concrete. It can help to improve the adaptability of polycarb to cement, fly ash, GGBFS, sand and mud content, also temperature and climate. It also can improve the viscosity and the strength of high grade concrete.