关键词:  , 民事诉讼；鉴定意见；委托关系；诉讼妨碍；法律规制

Abstract: In 2019, China revised the Provisions by the Supreme People’s Court on  Evidence in Civil Procedures, and for the first time responded to the issue of “self-revocation of expert opinions” in Article 42. However, the provisions of this law are very weak, unable to provide effective guidance for the work of judicial departments, nor can it eliminate scholars’ disputes over whether appraisal opinions can be self-revoked. Based on this, for the issue of choosing or rejecting appraisal opinions, strict review and judgment should be made in accordance with the rules of evidence. The nature of the act of self-revocation of appraisal opinions should in principle be defined within the category of being invalid from the very beginning. The issue of revocation of appraisal opinions should be regulated with “non-revocation as the principle and revocation as an exception”. Meanwhile, at the current stage, laws and regulations should regulate on the circumstance of appraisal opinions revocation, provide a complete procedural solution path for courts to handle the situation where appraisal opinions are revoked in practice, and enable the issue of self-revocation of appraisal opinions to gradually mature in the development of practice and return to the field of evidence rules.

Key words: civil litigation, appraisal opinion, entrusted relationship, obstruction of litigation, legal regulation