Apologetic business is the major servicing of case of lawyer conduction criminal, according to legal provision, the lawyer can receive those who suffer suspect of criminal case crime to invite in criminal case, offer law to seek advice for its, acting appeal, charge, apply for await trial of be bailed out, the commission that accepts person of guilty suspect, the accused or of people court appoint, hold the position of paraclete, accept the injured party of case of person of action initiated by an injured party without the participation of the public prosecutor of private prosecution case, public prosecution or its are near belong to entrust, hold the position of agent, join suit.

The lawyer holds the position of criminal paraclete, ought to mix according to the fact law, put forward to prove person of guilty suspect, the accused innocent, blame is light perhaps reduce, the material that avoids its criminal responsibility and opinion, safeguard the legitimate rights and interests of person of guilty suspect, the accused.

The lawyer enters litigant activity, the regulation of law of according to lawsuit, can collect, the material that consults to be concerned with this case, the person of person freedom is interviewed and be corresponded by limitation together, attend a forum, participate litigation, and the other right that enjoys provision of procedural law law.