After hepatitis B vaccination, eat a light, well-digested diet, forbid spicy and stimulating foods and foods that can easily cause allergic reactions, such as seafood, mangoes, durian, etc. Drink more water, avoid alcohol, and avoid contact with water at the injection site. Do not use immunosuppressants and adrenocorticosteroids after vaccination, and pay attention to rest and avoid staying up late. If local symptoms such as redness, swelling, itching, or loss of appetite occur, you may seek medical attention. Hepatitis B vaccine is currently one of the most effective clinical measures to prevent hepatitis B virus infection, and is generally administered clinically in three injections in 0, 1, and 6 months, and can be tested for quantitative hepatitis B surface antibody after one month to determine whether antibodies are produced.