Not against the law. Tearing up a marriage certificate is not considered a serious consequence, nor does it constitute a behavior that harms society, and it is not considered illegal. Apply for a replacement marriage certificate at the marriage registration authority.
1、 Is tearing up a marriage certificate illegal
Tearing up a marriage certificate is not illegal. According to the Marriage Law, if a marriage certificate or divorce certificate is lost or damaged, the parties may apply for a replacement with their household registration book or ID card to the original marriage registration authority or the marriage registration authority where one party's permanent household registration is located. If the marriage registration authority verifies the marriage registration files of the parties and confirms their authenticity, it shall issue a new marriage certificate to the parties.
2、 Procedure for reissuing marriage certificate
1. Verify identification cards, household registration books, and certificates issued by marriage registration authorities for reviewing marriage files, etc
2. The parties shall fill out the "Declaration Form for Applying for Replacement of Marriage Registration Certificate", and the signature in the "declarant" column of the "Declaration Form for Applying for Replacement of Marriage Registration Certificate" must be completed by the declarant in front of the proctor and fingerprint must be taken;
3. The marriage registrar serves as the supervisor and signs in the supervisor column;
4. For those applying for a replacement marriage certificate, both parties shall submit three 2-inch recent half body, bareheaded photos of both parties.