Hepatitis B immunoglobulin injections do not usually affect the preparation for pregnancy in healthy people, especially for pregnant women with hepatitis B teratitis B who are recommended to receive hepatitis B immunoglobulin after pregnancy. Hepatitis B immunoglobulin plays a very important role in preventing hepatitis B virus infection, especially for pregnant women with hepatitis B teratitis, they need to take one injection of hepatitis B immunoglobulin every month in July, August and September during pregnancy to achieve the purpose of blocking, and they also need to take hepatitis B vaccine and hepatitis B immunoglobulin within 24 hours after the delivery of the fetus, so as to avoid the infection of fetus with hepatitis B virus as far as possible. Therefore, preparation for pregnancy is usually not affected after hepatitis B immunoglobulin injection in normal people. Hepatitis B immunoglobulin does not have much effect on pregnant women and fetuses. If you are more worried, it is recommended to get pregnant three to six months after vaccination.