It is recommended that babies should not touch water after vaccination, and that they should eat a light diet and not be advised to eat stimulating foods. Hepatitis B is a chronic infectious disease that seriously threatens the health of our people. Since China is a large country with hepatitis B, most people are infected with hepatitis B as a result of mother-to-child transmission at birth, so our country is free of charge for all newborns to receive the hepatitis B vaccine, and the three full doses of the hepatitis B vaccine will produce a high concentration of hepatitis B surface antibodies to defend against infection by the hepatitis B virus.