According to the regulations, it is impossible to get a marriage certificate before the child is born. Specific can see your province's population and family planning regulations. Only the first legally born child can apply for a birth permit. (the premise is that there must be a marriage certificate and the child is not born. You should bring your marriage certificate, ID card, household registration book, the first marriage certificate of both husband and wife units or villages to the family planning office in your town to apply for a birth permit, and you should go together.