Legal analysis: There are three kinds of situations that restrict the interview: (1) In cases involving state secrets, the criminal suspect's hiring of a lawyer should be approved by the investigation organ; (2) The lawyer can meet the criminal suspect in custody, and the investigation organ can send personnel to be present according to the situation and needs of the case; (3) In cases involving state secrets, the lawyer's meeting with the criminal suspect in custody should be approved by the investigation organ.
legal basis: provisions on the procedures for handling criminal cases by public security organs article 49 if the public security organ is not allowed to meet, it shall notify the defense lawyer in writing and explain the reasons. After the circumstances that hinder the investigation or may reveal state secrets disappear, the public security organ shall allow the meeting. Under any of the following circumstances, it is "obstructing investigation" as stipulated in this article: (1) it may destroy or falsify evidence and interfere with witnesses' testimony or collusion; (2) It may cause the criminal suspect to self-harm, commit suicide or escape; (3) It may cause accomplices to evade or obstruct the investigation; (4) The family members of the criminal suspect are involved in the crime.