The main steps include: firstly, submit the filing materials to the Economic Investigation Brigade or the Economic Investigation Detachment of the Municipal Public Security Bureau. And truthfully state the incident and provide corresponding evidence materials, mainly including the registration information of the criminal suspect when opening a card account or the information of the credit card user who was stolen or fraudulently used, the bank bill of the defrauded money, the bank collection notice credentials, etc., and cooperate with the public security organs to make notes and obtain the report receipt. The public security organ checks and investigates the accepted materials to determine whether there is any criminal fact and whether the perpetrator should be investigated for criminal responsibility. For cases that need to be put on file, put on file. For those that don't need to be put on file, the staff will make a Notice of Not Putting on File. After the relevant person in charge agrees, the complainant will be informed of the reasons for not putting on file. If the complainant refuses to accept it, he can apply for reconsideration.

Legal basis: Article 112 of the Criminal Procedure Law of the People's Republic of China, the court, the people's procuratorate or the public security organ shall promptly examine the materials of reporting, accusing, reporting and surrendering according to their jurisdiction, and shall file a case if they think that there are criminal facts that need to be investigated for criminal responsibility; When it is considered that there are no criminal facts, or the criminal facts are obviously minor, and it is not necessary to pursue criminal responsibility, the case shall not be filed, and the complainant shall be informed of the reasons for not filing the case. If the complainant refuses to accept it, he may apply for reconsideration.