What is the reason why criminal detention is not allowed to see a lawyer?

The purpose of criminal detention is to ensure the smooth investigation of cases, prevent the leakage of cases and avoid the premeditated destruction and collusion of criminal suspects. So we can't meet for the time being. When interrogating a criminal suspect for the first time or taking compulsory measures against him, the investigation organ shall inform him that he has the right to entrust a defender. The people's procuratorate shall, within three days from the date of receiving the case materials transferred for examination and prosecution, inform the criminal suspect that he has the right to entrust a defender. The people's court shall, within three days from the date of accepting the case, inform the defendant of the right to entrust a defender. If a criminal suspect or defendant requests to entrust a defender while in custody, the people's court, the people's procuratorate and the public security organ shall promptly convey it.

If a criminal suspect or defendant is in custody, his guardian or near relative may also entrust a defender.

After accepting the entrustment of a criminal suspect or defendant, the defender shall promptly inform the case-handling organ.

According to the relevant laws and regulations, if a criminal suspect entrusts a lawyer as a defender during his detention, the defense lawyer can submit corresponding certificates to the detention center of the detained party, such as the lawyer's practice certificate and the certificate issued by his law firm, and apply for a meeting, and the detention center will arrange a meeting between the two parties. Legal basis: Article 39 of the Criminal Procedure Law of People's Republic of China (PRC). Defense lawyers can meet and correspond with criminal suspects and defendants 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 the first, third and fourth paragraphs shall apply to the meetings and correspondence between defense lawyers and criminal suspects and defendants who are under surveillance.

Legal basis:

Criminal Procedure Law of the People's Republic of China

Article 33 A criminal suspect or defendant may, in addition to exercising the right of defense, entrust one or two persons as defenders. The following persons may be entrusted as defenders:

(1) lawyers;

(2) A person recommended by a people's organization or the unit to which the criminal suspect or defendant belongs;

(3) Guardians, relatives and friends of criminal suspects and defendants.

A person who has been sentenced to punishment according to law or deprived of or restricted personal freedom shall not act as a defender.

A person who has been dismissed from public office or has his lawyer's or notary's practice certificate revoked may not act as a defender, except the guardian or near relative of the criminal suspect or defendant.