Abstract: Abstract: The Criminal Expert Opinion which is professional and scientific has substantive influence on trial results. The pretrial open proceedings of the Criminal Expert Opinion plays a significant role on the protection of right to defense, litigation efficiency and supervising Appraisal Institution and expert witness. The Criminal Expert Opinion is lack of effective cross-examination due to limited disclosure content, no right to organize pretrial open proceedings, shortage of remedial measures. Judicial authority can only prefect the pretrial open proceedings of the Criminal Expert Opinion by initiating, expanding the range of verified written opinion and setting standard ways of how to proceed and so on.

摘要： 摘要：刑事鉴定意见具有专业性和科学性，会对案件的审理结果产生实质影响。刑事鉴定意见的庭前开示程序对于保障辩护权、保障诉讼效率以及监督鉴定机构和鉴定人具有重要作用。由于披露内容有限、未规定法院对庭前开示的组织权、救济措施缺失等问题，刑事鉴定意见往往缺乏有效地质证。只有明确鉴定意见开示的启动；扩大鉴定意见开示的内容；规范鉴定意见开示的方式等方面，才能完善刑事鉴定意见的庭前开示程序。