It is possible for a man with hepatitis B to have a baby. The Clinical Guidelines for the Prevention of Mother-to-Child Transmission of Hepatitis B Virus (2020) states that the semen of a father with hepatitis B may contain some virus, but the sperm cells do not contain hepatitis B virus, so the virus in his semen cannot infect the oocytes. Therefore, the hepatitis B virus cannot infect the fertilized egg and cause infection in the offspring, so it is possible for men with hepatitis B to have a baby. It should be noted that for male hepatitis B patients in the antiviral treatment stage, if using interferon treatment, you need to consider having a baby after stopping the medication for at least 6 months, to avoid the damage of the drug to the sperm leading to fetal development deformities. For men who are on antiviral therapy with nucleoside (acid) drugs, there is no evidence that these drugs have adverse effects on sperm, and it is possible to have a baby while taking the drugs. It is recommended that male patients with hepatitis B consult a doctor for advice before planning a family.