Legal analysis: Criminal lawyers play a role in criminal case investigation, criminal case review and prosecution and criminal case trial. 1. In the investigation stage of criminal cases, lawyers can meet with criminal suspects detained in detention centers, convey the concerns of relatives and communicate with criminal suspects. 2. In the stage of criminal case review and prosecution, lawyers can obtain bail for criminal suspects and gain a deeper understanding of the case; 3. At the trial stage of a criminal case, a lawyer can represent the criminal suspect, fully explain the defense reasons and request the judge to give a lighter sentence.
Legal basis: Article 3 of the Lawyers Law of People's Republic of China (PRC), lawyers must abide by the Constitution and laws, and strictly abide by lawyers' professional ethics and practice discipline. Lawyers' practice must be based on facts and take the law as the criterion. Lawyers' practice should be supervised by the state, society and the parties concerned. Lawyers' legal practice is protected by law, and no organization or individual may infringe upon the legitimate rights and interests of lawyers.