Silkworm sand, also known as silkworm shit, silkworm feces, original silkworm sand, etc., has the efficacy of dispelling wind and dampness (eliminating wind and dampness in the body), harmonizing the stomach and resolving turbidity, etc. It is recommended that patients follow the doctor’s instructions to use the medicine. Silkworm sand belongs to the wind-dampness medicine, usually with the dried feces of silkworms into medicine, can be used to treat the wind, cold, dampness caused by joint pain, adverse movement and other symptoms; can also be used to treat the dampness blockage of the middle jiao caused by nausea, vomiting, abdominal pain, etc., and has the effect of harmonizing the stomach and resolving turbidity. In addition, the use of silkworm sand decoction can be used externally to remove dampness and relieve itching, commonly used in the treatment of itching skin, rubella and other diseases. The adverse reactions and contraindications of this drug are not clear, it is recommended to standardize the application under the guidance of traditional Chinese medicine practitioners.