If the antibody level is between 0-10mIU/ml, you can get 2-3 doses of hepatitis B vaccine, and if the antibody level is between 10-100mIU/ml, you can get another dose of hepatitis B vaccine. However, some people who are overweight, for example, above 100 kg, may not produce antibodies or the antibody number produced is too low if they are stimulated with the regular dose of hepatitis B vaccine, so it is recommended to double the hepatitis B vaccine. In addition, after the hepatitis B vaccination, you should pay attention to rest, do not stay up late, do not drink alcohol, do not do strenuous exercise, and do not eat spicy and stimulating food, because the above factors may reduce cellular immunity and affect the production of hepatitis B antibodies, so that the antibody production figures are too low or even do not produce antibodies.