Judging from the source of evidence, court transcripts of criminal cases are also illegal as evidence in civil proceedings. Criminal investigation activities are severe measures taken by state power agencies in order to investigate criminal suspects' criminal liability in accordance with the law. They are the most severe restrictions on citizens' personal freedom. They are carried out in strict accordance with legal procedures. Materials generated during the investigation process must be kept strictly confidential. The court It is confidential until sentencing and must be used in criminal cases. The Criminal Procedure Law stipulates that those who have the right to copy investigation transcripts are the competent agencies and defense lawyers. Outsiders have no right to copy. If a party outside the case holds the evidence, its source should be illegal. According to the illegal evidence exclusion rule, the evidence cannot be used as evidence. , should be excluded from the investigation. The Provisions on Criminal Defense of Lawyers (Draft for Comments) also contains some directional explorations: Defense lawyers shall keep confidential the case file materials they obtain in accordance with the law, properly keep the excerpted and copied case file materials, and shall not use them for other purposes other than the defense of this case. use.