You can cancel your residence at the local police station with the hospital certificate (in case of death), accident certificate (in case of traffic accident), cremation certificate (in case of natural death) and other death certificates. After you cancel your hukou, your marital status will be changed to widowed. You can use this hukou as a single certificate. In fact, there is no legal single certificate, or you can ask the local government department whether there is such a certificate. The single certificate is also called "unmarried certificate", and its full name in law is "certificate without marriage registration record". It is a written certificate proving whether the party has had marriage registration with the civil affairs department by a certain time, which is generally issued by the civil affairs department of the place where the household registration is located. The single certificate is also called "unmarried certificate", and its full name in law is "certificate without marriage registration record". It is a written certificate proving whether the party has had marriage registration with the civil affairs department by a certain time, which is generally issued by the civil affairs department of the place where the household registration is located. On September 15, the Ministry of Civil Affairs, on the basis of soliciting opinions from the Ministry of Education, the Ministry of Justice, the Ministry of Housing and Urban Rural Development, the CBRC and other major departments using marriage certificates, issued the Notice of the Ministry of Civil Affairs on Further Regulating (No) Marriage Registration Record Certification (hereinafter referred to as the "Notice"), which stipulates that:, Except for notarial matters involving Taiwan and those in 9 countries such as Kazakhstan, which can still continue to issue certificates to protect the legitimate rights and interests of mainland residents and Chinese citizens, civil affairs departments in various regions will no longer issue (no) marriage registration records. Specific purpose of single certificate
 1. When you need a loan to buy a house, you need the buyer's single certificate
 2. When participating in the blind date activities held by the marriage agency or newspaper office, you need to provide a single certificate to buy a house, go abroad, move your household registration, etc. Single residents must have a "single certificate" for all kinds of activities.