The use of Yuanhu can be categorized into decoction and bulk, the maximum dosage of decoction is 10g, and bulk, i.e. grinding and swallowing, is 3g. Yuanhu is the alias of the traditional Chinese medicine Yanhuosuo (延胡索), which has the properties of pungent, bitter, warm, and belongs to the heart, liver, and spleen meridians; it has the effects of activating blood circulation, promoting the flow of qi, and relieving pain. It treats all kinds of pain symptoms caused by stagnation of qi and blood, can move qi stagnation in blood and blood stagnation in qi, and specializes in treating all kinds of pain up and down the body. The dosage of Yuan Hu is strictly in accordance with the Chinese Medicine Codex of the People’s Republic of China, the maximum dosage of decoction can be 10g, and the maximum dosage of grinding and swallowing can be 3g. Clinical use of Yuan Hu is usually made with vinegar, which can enhance the pain-relieving effect. This medicine is pungent and dispersive, and should be used with caution during menstruation or in pregnant women, as well as in people with qi and blood deficiency. The maximum dosage of Chinese medicine, need to be used in strict accordance with the instructions of the pharmacopoeia, the specific dosage in the doctor’s guidance to identify the use, to avoid adverse effects.