Lawyers in criminal cases can do the following: in the investigation stage, they can meet with criminal suspects, learn about the case and investigation-related situation from the investigation organ, and report the situation to the investigation organ; In the stage of examination and prosecution, you can consult the files and relevant evidence materials and report the situation to the procuratorate; In the trial stage, you can act as the defendant's defender and exercise the right of defense according to law; After the judgment takes effect, an appeal may be filed according to the authorization of the defendant.
Legal objectivity:
Article 34 of the Criminal Procedure Law: A criminal suspect has the right to entrust a defender from the day when he is interrogated for the first time by the investigation organ or takes compulsory measures. During the investigation, only lawyers can be entrusted as defenders. The defendant has the right to entrust a defender at any time. When interrogating a criminal suspect for the first time or taking compulsory measures against him, the investigation organ shall inform him that he has the right to entrust a defender. Article 40 From the date when the people's procuratorate examines and prosecutes a case, the defense lawyer may consult, extract and copy the case file. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.