The detention center usually arraigns several times.

A criminal suspect detained in a detention center will generally be questioned by the resident prosecutor within three to five days after entering the detention center, and then the procuratorate will arraign the case within one month according to the needs of the case. The specific number of arraignments depends on the trial of the case.

Legal basis: Article 36 of the Criminal Procedure Law stipulates that legal aid institutions may send lawyers to be on duty in people's courts, detention centers and other places. If the criminal suspect or defendant does not entrust a defender or the legal aid institution does not entrust a lawyer to defend him, the lawyer on duty will provide legal assistance to the criminal suspect or defendant, such as legal consultation, suggestions on procedure selection, application for changing compulsory measures, and suggestions on handling cases.

The people's courts, people's procuratorates and detention centers shall inform the criminal suspects and defendants that they have the right to meet the lawyers on duty, and provide convenience for the criminal suspects and defendants to meet the lawyers on duty.

Article 39 of the Criminal Procedure Law: A defense lawyer may meet and correspond with a criminal suspect or defendant in custody. Other defenders, with the permission of the people's courts and people's procuratorates, may also meet and correspond with criminal suspects and defendants in custody.

If a defense lawyer holds a lawyer's practice certificate, a law firm's certificate, a power of attorney or a letter of legal aid to ask for a meeting with the criminal suspect or defendant in custody, the detention center shall arrange the meeting in time, which shall not exceed 48 hours at the latest.

In criminal cases endangering national security and terrorist activities, defense lawyers should obtain permission from the investigation organ when meeting with the criminal suspect in custody during the investigation. The investigation organ shall notify the detention center of the above situation in advance.

When a defense lawyer meets a criminal suspect or defendant in custody, he can understand the case and provide legal advice. From the date when the case is transferred for examination and prosecution, the relevant evidence may be verified with the criminal suspect or defendant. Defense lawyers are not monitored when meeting with criminal suspects and defendants.

The provisions of paragraphs 1, 3 and 4 shall apply to the meetings and correspondence between defense lawyers and criminal suspects and defendants who are under surveillance.