Drinking alcohol for vaccination may lead to an increased incidence of adverse reactions to the vaccine, and at the same time, because the manifestations after drinking alcohol are similar to the symptoms of vaccine allergy, misdiagnosis may easily occur and treatment may be delayed. In addition, the metabolism of alcohol into the human body may affect the absorption of vaccine and influence the role of vaccine: 1. Misdiagnosis: dizziness, blurred consciousness, stomach irritation, flushing and other manifestations may occur after drinking alcohol; adverse reactions may occur after vaccination, such as fever, flushing, nausea, headache, etc., which are similar to the manifestations after drinking alcohol, so drinking alcohol may cover up the adverse reactions of vaccine, thus leading to misdiagnosis; 2. Aggravating adverse reactions: any Alcohol can stimulate the immune system and aggravate the adverse reactions of vaccines. At the same time, the combination of alcohol and certain components of the vaccine can easily produce chemical reactions and allergy-like symptoms; 3. Reducing the effect of the vaccine: the immune function of the body changes after drinking alcohol, which may affect the preventive effect of the vaccine. In addition, vaccinators are advised to avoid drinking alcohol for 1 week after vaccination, and also to eat a light diet for 3-5 days after vaccination, avoiding excessive spicy and stimulating foods such as chili, onion, pepper, and strong tea and coffee.