Conclusion: Divorce by agreement involving foreigners requires both parties to go to the marriage registration authority in the place where the permanent residence of mainland residents is located. The process includes application, review, registration and certificate issuance. Usually, if the materials are complete and in line with the regulations, they can be handled on the spot. If there are supplementary materials, verification information or certification of foreigners' certificates, the processing time will be extended. Legal analysis: According to the Civil Code of the People's Republic of China and the relevant marriage registration laws and regulations, there are clear procedures for divorce by agreement involving foreigners. First, both parties shall jointly go to the designated marriage registration authority to apply and submit materials, and then the marriage registration authority shall review the certificates and supporting materials, and if they meet the conditions, they shall register and issue divorce certificates. Generally, it can be completed on the spot, but the processing time will increase when there are situations where materials need to be supplemented, the situation needs to be verified, or one party needs to authenticate a foreigner's certificate. If you encounter legal problems in the process of foreign-related agreement divorce, or do not understand the relevant procedures, please consult with professional legal professionals, and we will provide you with detailed and accurate answers.