To provide professional services to the parties involved in the case of criminal investigation: the legal aid, the agency and the defense of the case, investigation, prosecution, trial, second instance, execution, death penalty review, trial supervision, etc.

（一）To provide legal aid to criminal suspects during the investigation phase
1、Meet the criminal suspect；
2、Understand the alleged offense and relevant cases；
3、Provide legal advice for the suspect；
4、Apply for bail for the suspect；
5、Agency appeals and complaints。

（二）In the stage of review and prosecution as a defender and agent
1、Consult, extract, copy the relevant case materials；
2、And meet and communicate the suspect；
3、Relevant documents for investigation and collection；
4、This defense agency comments or appeal；
5、To the people's Procuratorate opinions。

（三）As a case of public prosecution trial lawyer
1、Consult, extract, copy the relevant case materials；
2、And meet and communicate with the suspect；
3、Investigation and collection of evidence；
4、Appear in court；
5、Participate in court investigation；
6、Participate in court debate；
7、After the adjournment of work。

（四）As a public defender in the second instance cases
1、To understand the situation of the study；
2、To assist the defendant or the written appeal；
3、Marking, extract, copy the case relating materials；
4、Meeting and communicating with the defendant；
5、Discover new evidence；
6、Appear in court；
7、Participate in court investigation；
8、Participate in court debate；
9、No cases of second instance court, submit new evidence and written opinions to court。

（五）The trial stage as the victim of public prosecution case

（六）As a case of private prosecution litigant agent and counsel
1、As a private prosecutor litigation agent；
2、Defense of the accused person。

（七）Act as an agent of the parties to the civil suit
1、Act as agent of the plaintiff；
2、Act as agent of the defendant。

（八）In the review of the death penalty, judicial supervision, the implementation stage of the parties to appeal the party