1. The criminal suspect and defendant are minors;
2. The criminal suspect or defendant is blind, deaf, dumb or mentally ill. In addition, if a criminal suspect or defendant may be sentenced to life imprisonment or death, a lawyer must also defend him.
Criminal Procedure Law of the People's Republic of China
Article 34 A criminal suspect has the right to entrust a defender from the day when he is interrogated for the first time by the investigation organ or compulsory measures are taken. During the investigation, only lawyers can be entrusted as defenders. The defendant has the right to entrust a defender at any time.
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.
Article 35 If a criminal suspect or defendant fails to appoint a defender due to financial difficulties or other reasons, he or his near relatives may apply to a legal aid institution. To meet the conditions of legal aid, legal aid institutions shall appoint lawyers to defend them.
If the criminal suspect or defendant is a mental patient who is blind, deaf, dumb or has not completely lost the ability to identify or control his own behavior, and has not entrusted a defender, the people's court, the people's procuratorate and the public security organ shall notify the legal aid institution to appoint a lawyer to defend him.
If a criminal suspect or defendant may be sentenced to life imprisonment or death without entrusting a defender, the people's court, the people's procuratorate and the public security organ shall notify the legal aid institution to appoint a lawyer to defend him.
Thirty-sixth legal aid institutions can send lawyers 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 37 The duty of a defender is to present materials and opinions on whether a criminal suspect or defendant is innocent, light or relieved of criminal responsibility according to facts and laws, and to safeguard the litigation rights and other legitimate rights and interests of the criminal suspect or defendant.
Article 38 A defense lawyer may provide legal aid to a criminal suspect during investigation. Acting as an agent for complaints and accusations; Apply for changing compulsory measures; Ask the investigation organ about the crimes and cases suspected by the criminal suspect, and put forward opinions.