Patient: I have a small triplet, but my liver function has always been normal. HBsAg(surface antigen) – negative 2.HBsAb(surface antibody) – negative 3.HBeAg(E antigen) – negative 4.HBeAb(E antibody) + positive 5.HBcAB(core antibody) + positive After birth, I had a hepatitis B vaccination. I also have hyperthyroidism, and I consulted with Prof. Jiang Ningyi of the Second Hospital, who told me that it is possible to feed hyperthyroidism, but if I have hepatitis B, I should consult with a professor of infectious disease. Prof. Zhao: Is it possible to breastfeed in this case? I really want to do it, but my family doesn’t agree with it. From a medical point of view, is it possible to breastfeed in this situation? Thank you! The Third Affiliated Hospital of Sun Yat-sen University, Department of Infectious Diseases, Zhao Zhixin: You’d better do a quantification of the hepatitis B virus, if it is negative, yes, but if the amount of virus is large, you need to consider it. You can also do a breast milk test for the presence of hepatitis B virus (HBV DNA test), if it is negative, you can feel free to feed. In addition, the child did not play hepatitis B immunoglobulin? It is best to do the same.