The third dose of the vaccine refers to the third dose of the New Crown vaccine, and it is not recommended to give the third dose of the vaccine if you have been drinking. The main reason why you can’t take the third vaccination after drinking alcohol is that your immune system will be affected after drinking alcohol and you can’t identify the adverse reaction of the vaccination. 1. The immune system is affected after drinking: after drinking, the body’s immune function decreases, at this time, the third vaccination can not stimulate the body’s immune system to produce a sufficient number and titer of antibodies against the virus, resulting in insufficient ability to fight diseases after vaccination. 2. Unable to clarify the adverse reaction of vaccination: after drinking alcohol, the human body will have a series of phenomena such as flushing, fever, etc. If the third vaccination is given at this time, some patients are allergic to the vaccine, and will also have redness, swelling and fever of the skin. Doctors cannot clearly determine whether it is the effect of alcohol or an adverse reaction after vaccination. Therefore, it is best to abstain from alcohol for about a week before and after receiving the new crown vaccine to prevent adverse reactions to the vaccine after drinking alcohol.