Yuan Hu, also known as Yan Hu Suo, can be taken through decoction or powdered and swallowed. Yuan Hu is the dried tuber of Yan Hu Suo (延胡索), a plant of the genus Corylus in the family of Poppy, which is pungent, bitter, warm and enters the heart, liver and spleen meridians, and has the effect of invigorating the blood and promoting the flow of qi to a certain extent, relieving pain and removing stasis. It is usually used to treat symptoms caused by stagnation of qi and blood in the chest and ribs, epigastric (abdominal) pain, chest palsy (chest pain), heart pain, dysmenorrhea, post-partum stasis, and swelling and pain in bruises. Its use is decoction soup or powder swallowed, pay attention to pregnant women are prohibited from taking, the body of the person cautious of taking, its adverse effects are not clear. If the body is unwell, you need to be under the guidance of a professional doctor, combined with the individual situation for targeted treatment, avoid blind use of medication, so as not to delay the condition or aggravate the symptoms, resulting in adverse effects.