2. Lumbricus is one of the important Chinese herbal medicines in China. Earthworms are among the 67 kinds of animal medicines recorded in Shennong Materia Medica, the earliest monograph of traditional Chinese medicine. It is listed as inferior in Shennong Materia Medica Classic, which has the effects of clearing away heat, calming convulsion, dredging collaterals, relieving asthma and diuresis. Often fried, it can be used for high fever, coma, convulsion, arthralgia, cough due to lung heat, oliguria and edema, hypertension, etc. Mainly contains a variety of amino acids. Because the smell of raw products is too strong, it is generally necessary to stir-fry for medicine. Tao Hongjing said, "If you take dried earthworm, you must boil it into crumbs.". Traditionally, there are many methods to make ground dragon, such as medicinal preparation, vinegar preparation, boiling, wine preparation, oil preparation, clam powder frying, salt preparation, etc., to make its texture loose and crisp, detoxify, correct odor and facilitate frying uniforms.