The difference between Chun Chaihu and Chaihu mainly has the different aspects of naming source, medicinal parts and scope of action. 1. According to the origin and drug traits of the different types of firewood is divided into southern firewood and northern firewood, according to the species is divided into bamboo leaf firewood and spring firewood two kinds of firewood, of which the spring firewood is also known as “buds Hu”, especially refers to the spring harvest of the whole plant of the young firewood, so the spring firewood is the firewood is a kind of category of plants. 2. The medicinal part of Chun Chaihu is the young and tender whole plant, and must be harvested in spring before it can be used, while Chaihu is usually the dried root of Chaihu dug in fall, dried and sliced, and then used in concoctions. 3. The main function of Chai Hu is to relieve liver depression and dampen heat and elevate yang. It can be used clinically for the treatment of liver depression and stagnation of qi, such as chest and ribs distension and pain, menstrual disorders, malaria, jaundice, stones, etc. Spring Bupleurum is more suitable for dispersing the Liver and relieving depression. Spring Chaihu favors liver dispersal, and its other effects are weaker than those of Chaihu, and because it is a young sprout, it can be used in cooking. If there is a need for medication, it should be prescribed by a physician after diagnosis and treatment, and should not be taken without authorization to avoid adverse effects.