Chaihu Injection Shot has the effect of clearing heat and relieving surface. Clinically, it can be used to treat fever, slight malignant wind and headache caused by external wind-heat. Chaihu injection is a traditional Chinese medicine injection, the main active ingredient is Bei Chaihu, the excipient is sodium chloride, polysorbate 80.Chaihu is slightly cold in nature, bitter and pungent in taste, and belongs to the liver and gallbladder meridian. It can be used for fever caused by colds, influenza and malaria. If the patient does not exist fever should not use Chaihu injection injection, Chaihu injection injection has a history of allergy to Chaihu injection injection, allergies, children, pregnant women and other people are prohibited from use. Adverse reactions have been reported which may include anaphylactic reaction, allergic reaction, acute pulmonary edema, etc. Patients should go to regular hospitals and use under the guidance of professional doctors when using the drug of Chaihu Injection Needle to avoid blindly using the drug to appear serious adverse reactions.