1. Self-defense. That is, criminal suspects and defendants defend themselves.
2. Entrusted defense. That is, the criminal suspect and the defendant sign an entrustment contract with the person permitted by law, and others defend themselves.
3. Designated defense.
legal ground
Article 33 of the Criminal Procedure Law stipulates that a criminal suspect or defendant may entrust one or two persons as defenders in addition to exercising the right of defense. 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.