Earthworms are known as Dilong in traditional Chinese medicine, which can be used to treat high fever and dizziness, epilepsy and convulsions, joint paralysis, numbness of the limbs, hemiplegia (one side of the limbs can not move at will), coughing and wheezing with lung fever, edema and urination, etc. The specific use of the medication should be in accordance with doctor’s instructions. Dilong is salty and cold in nature, belonging to the liver, lung, spleen and bladder meridians, with the effect of clearing away heat, calming alarms, clearing the channels, calming asthma, and inducing diuresis, and is mainly used for treating high fever and fainting, convulsions of eclampsia, joint paralysis, numbness of the limbs, paralysis of the paraplegia, lung-heat coughing and wheezing, and oedema with scanty urination, and other diseases. Earthworm is salty and cold, and is prone to injure the spleen and stomach, so it should be used with caution by people with hypocapnia (weak and cold spleen and stomach). Earthworms need to be concocted before they can be used as medicine, and specific medication should be administered under the guidance of a specialist.