legal ground
Article 15 of the Regulations on Marriage Registration
The marriage registration authority shall establish marriage registration files. Marriage registration files should be kept for a long time. The specific management measures shall be formulated by the civil affairs department of the State Council in conjunction with the national archives management department.
Article 17
If the marriage certificate or divorce certificate is lost or damaged, the parties concerned may apply for a replacement with their household registration book and identity card to the original marriage registration office or the marriage registration office where one party's permanent residence is located. The marriage registration authority shall verify the marriage registration files of the parties concerned, and if it is confirmed to be true, it shall reissue the marriage certificate and divorce certificate for the parties concerned.
skill
The above answer is only for the current information combined with my understanding of the law, please refer carefully!
If you still have questions about this issue, I suggest you sort out relevant information and communicate with professionals in detail.