Legal analysis: The crime of credit card fraud is generally investigated by the local public security bureau. The crime of credit card fraud refers to the act of using credit cards to defraud a large amount of property for the purpose of illegal possession, in violation of credit card management regulations.

Legal basis: Article 19 of the Criminal Procedure Law of People's Republic of China (PRC) shall be investigated by public security organs, except as otherwise provided by law. Crimes such as illegal detention, extorting confessions by torture, and illegal search. The people's procuratorate may file a case for investigation of illegal acts found by judicial personnel in the process of legal supervision of litigation activities. If a major criminal case of a functionary of a state organ under the jurisdiction of a public security organ needs to be directly accepted by a people's procuratorate, it may be placed on file for investigation upon the decision of a people's procuratorate at or above the provincial level. Cases of private prosecution are directly accepted by the people's courts.