Natural medicine, also known as non-drug treatment system, has emerged in developed countries in recent years. It uses various natural ways and natural substances to form natural therapy, which can improve or repair the autoimmune function of human body and the self-healing ability of various organs of human body, and finally restore the overall health of body, mind and spirit. The health condition of modern people is worrying. With the continuous development of modern society and scientific civilization, modern people's material life is constantly enriched, but people's health status is not optimistic. According to the authoritative report, more than 70% of the occupational population has sub-health in different degrees. There are 654.38+600 million patients with hypertension and more than 40 million patients with diabetes in China, with 2 million new cancer patients every year. The average life expectancy of intellectuals is 5 years lower than that of 10 years ago, only 53 years, which is lower than the national average life expectancy 17 years. The idea that "health is not everything, but there is nothing without health" urges people to pay more attention to and seek the best way to prevent, alleviate and improve sub-health and chronic diseases. Limitations and toxic side effects of drug therapy Although modern medicine has made great progress, it has caused many diseases.