既判力作为终局判决所具有的一种效力,是指一种禁止当事人就同一纠纷再度提出争议的强制性效力。既判力理论和诉权理论、诉讼标的理论等都具有千丝万缕的联系,因此既判力理论的研究可以完善我国民事诉讼理论体系,也能够对实践进行准确的指导。本文就诉讼和解的既判力问题进行探讨,以弥补我国在这一方面的理论不足。 Res judicata, as an effect of the final judgment, refers to a compulsory effect that prohibits the parties from re-argueing on the same dispute. The theory of res judicata is related to litigation rights theory and the subject of litigation theory. Therefore, the study of res judicata theory can perfect the theoretical system of civil litigation in our country and can guide the practice accurately. This article discusses the issue of res judicata in reconciliation of litigation so as to make up for our theoretical deficiency in this aspect.