Drinking alcohol the day before and the day after is not recommended for the new crown vaccine. The incidence of adverse reactions to the vaccine may increase after drinking alcohol, and the metabolism of alcohol into the body may also affect the functioning of the vaccine. Also, since some of the reactions after drinking are similar to the symptoms of vaccine allergy, it may cause misdiagnosis and delay treatment. There are several reasons why vaccination is not recommended: 1. Affecting the effectiveness of vaccination: When vaccination is given after drinking alcohol, the active ingredients in the vaccine that make the vaccine work in the human body are reduced because the ingredients are easily combined with alcohol, thus affecting the preventive effect of the vaccine. Some studies show that drinking alcohol may even lead to vaccine prevention failure, and some people will still get sick; 2. aggravate or cover up adverse reactions: any vaccine has different degrees of adverse reactions, such as local headache, itching, or general weakness, fever, diarrhea, allergy, etc., which are common after vaccination, and alcohol can stimulate the immune system and aggravate adverse reactions to vaccines; alcohol takes a long time to metabolize in the body, and vaccinators can It takes a long time for alcohol to be metabolized in the body, and vaccinators may experience persistent dizziness, headache, blurred consciousness, and blushing, while fever, blushing, nausea, headache, and allergy may also occur after vaccination, and the two may behave similarly, so drinking alcohol may cover up adverse reactions to vaccines, leading to misdiagnosis. In addition, it is recommended that vaccinators avoid drinking alcohol for 1 week before and after vaccination, and that they eat a light diet and avoid spicy and irritating foods and allergy-prone foods, such as seafood. In particular, eating a light diet the day before vaccination and ensuring sufficient sleep at night will help reduce adverse reactions to the vaccine. It is also not recommended to drink coffee or strong tea and to eat irritating foods such as seafood within one week after vaccination.