Vaccine booster injection mostly refers to the new coronavirus vaccine booster injection, and it is recommended to drink alcohol after 1~2 weeks after the vaccine booster injection. Drinking alcohol after vaccination, alcohol will be absorbed from the gastrointestinal tract and enter into the bloodstream of the vaccinated person, participating in the chemical reaction and metabolism in the body of the vaccinated person, which is likely to aggravate the adverse reactions of the vaccinated person, such as: allergy, redness, swelling, fever, itching of the skin and localized pain. Excessive alcohol consumption also affects the function of the body’s immune system, making the immunity of the vaccinated person lower, resulting in a weaker effect of vaccination. Therefore, it is recommended that patients should drink alcohol 1~2 weeks after vaccination. If you feel unwell after vaccination, you should go to the hospital immediately for examination, and at the same time notify the staff at the vaccination site to prevent adverse consequences.