To put it simply, the procuratorate belongs to the judicial organ in China, and its main function is to prosecute criminal cases filed by public security organs, investigate and prosecute corruption and bribery crimes on its own, and support public prosecution in court when the court is in session. At the same time, it has the function of supervision. The public security organ is an administrative organ, which mainly deals with information such as household registration, and its main function is to investigate cases. Submitted to the people's procuratorate after the investigation. The industrial and commercial bureau is also an administrative organ, mainly responsible for commercial taxation.