In clinical practice, there is no such thing as “how to take the safest and most effective”. Dilong is mainly taken as decoction, powder, pill or powder. Dilong is the dried body of the giant earthworm, the common earthworm, the William’s earthworm, or the pecten-blind earthworm. It is salty and cold in nature, and belongs to the liver, spleen and bladder meridians. It has the effects of clearing away heat and settling fright, clearing collaterals, calming asthma and inducing diuresis. It can be used in the treatment of high fever and dizziness, epilepsy and convulsions, joint paralysis, numbness of limbs, hemiplegia (one side of the limbs can not move at will), lung fever, wheezing and coughing, oedema and urinary deficiency. The adverse reactions of the drug are not clear, but patients who are allergic to the drug should not use it. It can be taken as decoction, powder, pill or powder. If necessary, patients are advised to go to regular hospitals for treatment under the guidance of professional physicians.