姜振业

（中国政法大学证据科学研究院，北京 100088）

【摘 要】 关于口供在刑事诉讼中的地位和作用，纷争已久。在现代刑事诉讼制度下，被告人不再是诉讼的客体，刑求被告口供已经不被允许，口供不再是判决有罪的必要条件。但口供依赖问题依然客观存在，甚至修法后矛盾仍未解除。在未对口供进行合法性及相关性等严格证明程序审查前，对口供自愿性的调查实 质上是对侦查合法性调查。与此相关的系列问题，如相互印证规则是否是合法的证据调查方法，藉由补强证 据来补强被告口供的可信度，是法官主观的认定，或是适当的证据调查方法，均需认真检讨。

【关键词】口供自愿性；证据能力；证明力；补强规则

【中图分类号】D915.13

【文献标识码】A

【文章编号】1674-1226（2018）05-0594-09

An analysis on the evidential competence of confession. Jiang Zhenye. Ph.D candidate of China University of Political Science and Law, 100088.

【Abstract】There has been a long-standing dispute over the status and role of confessions in criminal proceedings.In modern criminal procedure system, defendant is no longer the object of a lawsuit, confession obtained by torture is no longer allowed, and confession is no longer the necessary condition for conviction. However, the dependence on confession still exists. The contradiction has not been resolved even the law has been revised. Before examining the legality and relevancy of a confession with strict proof procedure, the investigation of the voluntariness of a confession is in nature an investigation of the legality of the investigative measure. A series of relative questions, such as whether the mutual corroboration rule is a legal evidence examination method, and whether it is the judge’s subjective determination or an appropriate evidence examination method when the credibility of the defendant’s confession needs to be fostered by corroborating evidence, needs to be carefully reviewed.

【Key Words】 Voluntariness of a confession, Evidence competency, Weight of evidence, Corroboration rules