Chaihu is neither hot nor cool, it is slightly cold. Chaihu is an antidepressant and is the dried root of Chaihu or Narrow-leaved Chaihu of the Umbelliferae family. It is bitter and slightly cold in nature, and belongs to the liver, gallbladder and lung meridians. It has the efficacy of evacuating and relieving fever, dredging the liver to relieve depression, and elevating yang qi. It is often used in the treatment of cold and fever, cold and heat, chest and hypochondriac distension and pain, menstrual disorders, uterine prolapse, prolapse of the anus, etc. When used, it should be noted that the properties of this medicine are very similar to those of the other medicines. When used, it should be noted that the drug has the property of ascending and rising, so it should not be taken by patients with true yin deficiency, hyperactivity of liver yang, yin deficiency and hyperactivity of fire, or rebelliousness of qi. If you need to use Chai Hu, it is recommended to go to a regular hospital and use it under the guidance of a professional physician, not on your own, so as not to delay the condition.