Abstract: About 30 years achievements of the studies on the regulation of flower sex differentiation ,decreasing empty bundle, raising the rates of fruit,green branch cutting and grafting surviving,regulating seed sprouting,improving the properties of storing etc.of Chinese chestnut are reviewed in view of the application of plant growth regulator and many chemicals related to nutrition physiology for regulating the substance metabolism and physiological function of Chinese chestnut growth process. Meanwhile, this paper also discusses on the research current situation and main research directions of chestnut chemical regulation in future.

Key words: Chinese chestnut, Chemi-regulation, PGR, Mineral nutrition, Flow sex differentiation, Growth and bearing