Can the question about the child's household registration be found out at the police station?

The public security bureau is in charge of social security and household registration, not family planning. The number of children born is under the control of the family planning department, and the public security bureau will not check it. However, the public security bureau can only register with the birth certificate of the family planning department or the social support fee collection document (fine), and the family planning department will check it. To apply for a birth certificate, you must submit the birth information materials issued by the Family Planning Bureau where the original household registration is located. For unplanned births without birth certificate, the original domicile must be submitted after the fine. Unless the child you gave birth to before has not applied for a birth permit, registered an account, and no one knows, and no one knows the whereabouts of the child, of course, it is impossible to find out. As long as your family planning department knows, there is no need to check, you must provide it yourself. It is also very clear to check online.