This is a question that has been bothering doctors and would-be mothers of hepatitis B carriers for a long time. For a long time, this is how I answered the inquirer: 1. The simple answer of yes or no is unsubstantiated because there is no experimental data in this regard. It’s not that no doctors are willing to experiment, but doctors can’t divide carrier mothers into an experimental group and a control group for the experiment. Carriers would rather be willing to not breastfeed. Healthy mothers can also refrain from breastfeeding. The question of whether or not to breastfeed seems to disappear. Breastfeeding, however, is good for both the baby and the mother. Therefore, the clinical question will still often be encountered: can a woman with hepatitis B virus breastfeed her baby or not? For a long time, I will also answer the inquirer in this way: 2, from past experience, even if the mother does not take mother-to-child interruption of prevention, and breastfeeding children may not always infected with hepatitis B. Here I am not saying that mother-to-child interruption of prevention is not important. On the contrary, it is very important! Can I breastfeed my baby after PMTCT? At present, I am so instructed patients: 3, this is very important, I hope you know, especially obstetricians can know, is in the production of pediatric umbilical cord blood, check the two half of hepatitis B, if the surface antibody is positive my advice is: can breastfeeding!