The highly active components produced by Inonotus obliquus, a medicinal fungus, were used as growth regulators in rice production by soaking seeds, spraying and washing. It can promote seed germination, disease resistance and yield increase, and increase the content of β - glucan in rice. Application at Seedling Stage: Germination of rice was advanced 1-2 days, chlorophyll content of seedling increased by 10%, disease resistance of seedling was remarkable. Field application: The maturity of rice was 3-5 days ahead of schedule, the yield of small-scale test increased by more than 10%, the content of β - glucan in rice increased by 40%, the content of amylopectin in rice increased, the quality of rice was improved, the taste was soft and glutinous, and the rice flavor was stronger. The application of this growth regulator can effectively activate crop immune system, promote plant growth, improve rice disease resistance, reduce the use of chemical agents, reduce the pollution of agricultural natural resources, and improve the international competitiveness of rice and its industrial chain products. β - glucan has the effect of enhancing human immunity. Long term consumption of rice rich in β - glucan can enhance people's physical fitness and enhance their disease resistance. This technology has been applied in Heilongjiang Fangzheng, Suihua, Wuchang and other major rice production areas for 4 years, and achieved good field planting effect. Because of its health care function quality, its market value is far higher than ordinary rice. The β - glucan content of rice produced by this technology is significantly higher than that of ordinary rice. Long term consumption can improve human immunity, and the market price can be as high as 30 yuan / kg.