What are the three stages the lawyer said?

Legal analysis: criminal cases generally go through three stages, that is to say, the complete procedure of a criminal case lawsuit includes:

1, investigation stage (public security stage)

2, review and prosecution stage (procuratorate stage)

3. Trial stage (court stage)

Legal basis: Criminal Procedure Law of People's Republic of China (PRC).

Article 19 Criminal cases 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. When the people's procuratorate conducts legal supervision over litigation activities, it finds that judicial personnel use their powers to infringe upon citizens' rights and damage judicial justice, and may file a case for investigation. 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.

Article 52 Judges, prosecutors and investigators must, in accordance with legal procedures, collect all kinds of evidence that can prove the guilt or innocence of criminal suspects and defendants and the seriousness of crimes. It is strictly forbidden to extort confessions by torture and collect evidence by threats, enticements, deception or other illegal methods, and no one may be forced to prove his guilt. It is necessary to ensure that all citizens who are related to or know the case have the conditions to provide evidence objectively and fully, and they can be hired to assist in the investigation except in special circumstances.