1. Defend the suspects and defendants from the entity.
2. Defend the criminal suspect and defendant from the procedure.
3. Providing other legal aid to criminal suspects and defendants. Including answering relevant legal questions raised by criminal suspects and defendants; Write relevant documents for criminal suspects and defendants. After the case is pronounced, it is necessary to understand the attitude of the defendant and ask his opinion on the verdict and whether to appeal.
Legal basis: Article 38 of the Criminal Procedure Law of People's Republic of China (PRC), defense lawyers can provide legal assistance to criminal suspects 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.