The use of normal doses of Chaihu has no clear harm to the liver. Chaihu is a kind of traditional Chinese medicine, for the umbrella-shaped Chaihu plant Chaihu dry root, taste bitter, pungent, sex slightly cold, into the human body liver, gallbladder two meridians; with the reconciliation of the surface and the inside, the liver, the efficacy of the Yang; used for fever fever and cold alternately, dystocia (dystocia part of the pain), deafness, dizziness, malaria, prolapse of the anus, uterine prolapse and other diseases. Chaihu adverse reactions, contraindications are still unclear, the drug should be noted that the yin deficiency and hyperactivity (yin deficiency, hyperactivity of yang) fire is contraindicated. Chaihu, when taken in the correct dosage, has no clear harm to the liver; however, if overdosed for a prolonged period of time, toxic accumulation of the drug may occur, leading to liver function abnormalities and damage. If there is a need for medication, it should be used under the guidance of a Chinese medicine doctor, and should not be used blindly on its own to avoid adverse consequences.