According to article 32 of the criminal procedure law of our country, "the criminal suspect and the defendant may entrust one or two persons to act as defenders unless they exercise the right of defense." The following persons may be entrusted as defenders: (1) lawyers; (2) persons recommended by the people's group or the suspect or the unit of the defendant; Guardians or relatives or friends of a criminal suspect or defendant. Those who are being punished or are deprived of their personal freedom according to law shall not act as defenders."

Although the criminal procedure law in our country for defenders qualified to set the bar is not high, however, has a superb professional skills and profound legal literacy practicing lawyers undoubtedly much bigger than the average citizen as defenders have chance. The formal lawyers have an incomparable advantage, and they are more accurate and comprehensive in the mastery of legal knowledge. They are more adept at handling the proceedings; They are more polished in the use of evidence. They are more able to safeguard the legitimate rights and interests of criminal suspects and defendants.