1. Under normal circumstances, after the police report the case, the investigation will be launched after the case is filed, and the evidence will be fixed, such as making a record for the parties; It is also possible that after reporting the case, the police station cannot immediately judge whether it meets the conditions for filing a case, or it is possible to conduct a preliminary investigation and make a record. After reporting the case, the police station definitely does not meet the conditions for filing the case and will not accept it, so it will not be recorded;
2. Reports can be made in written or oral form. If it is an oral report, the receptionist shall make a written record, which shall be signed or sealed by the informant after being read out correctly. The people's court, the people's procuratorate or the public security organ shall timely review the report materials within their jurisdiction, and if they think that there are criminal facts that need to be investigated for criminal responsibility, they shall file a case; If it is considered that there is no criminal fact, or the criminal fact is obviously minor, it is not necessary to pursue criminal responsibility, and the case will not be filed.
Legal basis: Article 109 of the Criminal Procedure Law of People's Republic of China (PRC).
When a public security organ or a people's procuratorate discovers a criminal fact or a criminal suspect, it shall file a case for investigation within its jurisdiction.
Article 110 of the Criminal Procedure Law of People's Republic of China (PRC)
Any unit or individual who discovers criminal facts or suspects has the right and obligation to report to the public security organ, the people's procuratorate or the people's court.