Earthworms that is, the ground dragon, has the effect of clearing away heat and settling the alarm, etc., the efficacy of drinking water is limited, should be used in accordance with medical advice. Earthworm belongs to a kind of traditional Chinese medicine, taste salty, cold nature. It belongs to the liver meridian, spleen meridian, bladder meridian. It has the effect of clearing away heat, calming the alarm, calming the asthma, clearing the channels and diuretic. It is used for lung-heat asthma and cough, high fever and dizziness, convulsions and epilepsy, joint paralysis, paraplegia (one side of the limb can not move freely), numbness of the limbs, edema and urination. Dilong is used as a decoction to be taken internally, or made into pills or powder. The effective dosage of Dilong in water is limited, and it is difficult to achieve the main therapeutic effect. Di Long should not be taken by people with deficiency of spleen and stomach (spleen and stomach weak and cold), and pregnant women are forbidden to take this product. Adverse effects of Dilong are not clear, and the drug should be used under the guidance of a doctor’s diagnosis.