Breastfeeding is usually possible if the virus has been controlled and mother-to-child blockade has been performed. However, breastfeeding is generally not recommended if a mother with HBV still has a high viral replication rate or if there is nipple breakage. If the replication level of hepatitis B virus is very low in the mother with Hepatitis B, and the virus has been controlled by antiviral treatment during pregnancy, and mother-to-child interruption has been carried out, and the baby has been injected with hepatitis B vaccine and hepatitis B immune globulin, breastfeeding is usually allowed. If the hepatitis B virus replication rate is still high and the mother has been taking oral antiviral medication after delivery, breastfeeding is not recommended in this case. Or if the mother’s nipple is broken or the baby’s oral mucosa is broken, breastfeeding is also not recommended because of the risk of hepatitis B virus transmission. It is recommended that the mother should pay attention to regular checkups, so that she can block and isolate the disease at an early stage.