The annual international earthworm trade has reached US$2 billion. In 1979, my country introduced the "Dahira No. 2" earthworms and the "Bokusei No. 2" earthworms from Japan. These two species belong to the Akako Eiseki earthworm. Their characteristics are: strong adaptability, high reproduction rate, and suitable for artificial breeding. Since 1980, 8 experiments and promotions have been carried out in various provinces, cities and autonomous regions across the country. There has been a wave of earthworm breeding craze. About 600 counties have carried out artificial earthworm breeding work, but due to various reasons, most of them have terminated production. , only a small number of breeding units and some scientific research units have retained the source of the species. In the past 20 years, some of the best practices have been established, such as Beijing Shuangqiao Earthworm Farm, which uses pig and cow dung to breed earthworms with an area of ??70-100 acres. It mainly uses earthworms to extract raw materials for drugs that treat cerebral thrombosis and uses earthworm dung as lawn. Hehuadon fertilizer, its products are sold to Japan, South Korea and other countries. Traditional research and utilization are mainly based on wild earthworms. It was not until the 1960s that some countries began to artificially raise earthworms. By the 1970s, the craze for earthworm breeding had spread all over the world. As a promising new breeding industry, many countries have developed and established earthworm breeding enterprises that have begun to take shape, such as the United States, Japan, Canada, the United Kingdom, Italy, Spain, Australia, India, the Philippines, etc. Some countries It has developed into factory farming and commercial production. There are currently about 300 large-scale earthworm farming companies in the United States, and the International Vermiculture Farmers Association has been established in recent years. Some earthworm farming companies are beginning to use cultured earthworms to deal with garbage in big cities. There are now more than 200 large-scale earthworm farms in Japan, with more than 2,000 people engaged in earthworm farming. A nationwide earthworm breeding association has been established. In 1987, Shizuoka Prefecture built a 16,500-square-meter earthworm factory that can process organic waste and papermaking every month. The factory produces 3,000 tons of pulp, and also produces earthworm additives to meet the needs of artificial breeding of earthworms; the Qiuku County Earthworm Breeding Factory breeds 1 billion earthworms and is used to treat 100,000 tons of waste from food factories and fiber processing plants. Mud, turning waste into fertilizer. Earthworms are also used to process pig manure, converting solid pig manure into protein feed, which can be used to feed fish and poultry instead of fish meal and soybeans. Vermicompost is a high-quality fertilizer that is comparable to industrial fertilizers.