Article 17 of the Regulations on Marriage Registration:

1. If the marriage certificate and divorce certificate are lost or damaged, the parties concerned may apply to the original marriage registration office or the marriage registration office where one party's permanent residence is located for a replacement with the household registration book and ID card.

2, the marriage registration authority to verify the marriage registration files of the parties, confirmed to be true, it shall reissue the marriage certificate and divorce certificate for the parties.

Extended data:

The marriage registration authority shall examine the certificates and certification materials issued by the parties to the marriage registration and ask about the relevant situation. If the parties meet the conditions for marriage, they shall register on the spot and issue a marriage certificate; If the parties do not meet the conditions for marriage and refuse to register, they shall explain the reasons to the parties.

When mainland residents get married, both men and women should go to the marriage registration office where one of them has a permanent residence.

If a China citizen marries a foreigner in the Mainland, and a mainland resident marries a Hong Kong resident, a Macao resident, a Taiwan Province resident or an overseas Chinese in the Mainland, both men and women shall * * * go through the marriage registration office where the permanent residence of the mainland resident is located.

References:

Baidu Encyclopedia-Regulations on the Administration of Marriage Registration