It is not recommended to drink alcohol the day before the vaccination, and if you plan to have the vaccination, it is best to avoid alcohol three days before the day of vaccination and to avoid spicy, stimulating and oily foods. It takes about two days for the body to metabolize the alcohol after drinking. If you drink alcohol the day before the vaccination, the alcohol that has not been metabolized and is still in your body may affect the effectiveness of the vaccine and make it less immune to the disease, so it is not recommended to drink alcohol before the vaccination. The reaction of the human body after drinking alcohol is similar to the adverse reaction after vaccination, including dizziness, redness of the skin, babbling, and weakness of the limbs. If these symptoms occur after drinking alcohol, it will be difficult to distinguish whether these symptoms are caused by alcohol or vaccine, which will affect the judgment and delay the treatment. If these symptoms are caused by the vaccine, it is necessary to assess whether the vaccination can be continued accordingly, and the life and health of the patient may be affected if the treatment measures are wrong due to the error in judgment. Therefore, it is not recommended to drink alcohol the day before the vaccination, and it is recommended to change the time of drinking and gathering for the sake of the immunization effect of the vaccine and the health of yourself and your family. It is also recommended to avoid drinking alcohol for a week after the vaccination in order to avoid confusion with adverse reactions to the vaccine.