According to Article 5 of China's Marriage Registration Regulations, mainland residents who apply for marriage certificates shall issue their household registration books and identity cards. If you lose the household registration, the parties need to go to the public security department or the relevant household registration management agency to issue a household registration certificate with a seal.
According to Article 5 of China's Marriage Registration Regulations, mainland residents who handle marriage registration shall present the following documents and certification materials: their household register, ID card; A signed declaration that I have no spouse and that I am not related to the other party by direct blood or by collateral blood within three generations.
For the parties who have lost the household registration, they need to go to the household registration administration or public security department, issue a household registration certificate with a seal, and then take the household registration certificate to the civil affairs department for marriage registration.
If the party's household registration book belongs to the collective household registration, you can directly take the collective household registration card or a copy of the household registration certificate stamped with the unit seal to the civil affairs department for marriage registration.