You can go directly to the police station to check. If you need to issue a certificate of no criminal record is also possible.

"Proof of criminal record" should be obtained by the judicial investigation department or the political examination unit in accordance with the procedures stipulated by law. At present, taking into account the residents for special matters (such as recruitment, abroad, etc.) needs, according to the latest provincial Public Security Bureau documents, the residents of the transfer of my "no criminal record certificate", you can with my household registration and identity card, to the household registration place of the police station to submit a written application; the police station acceptance of the investigation through the verification of the three working days to reply: no! The police station will respond within three working days after accepting the application by investigating and verifying the application: if the applicant has no criminal record, a certificate will be issued; if the applicant has a criminal record, no certificate will be issued. The issuance of certificates is free of charge.