本文详细分析了刑事错案产生的证据因素,包括侦查机关取证不规范、诉讼证明标准的模糊、证人出庭作证规则不足。针对分析的原因提出了三点预防错案的具体建议,即禁止非法取证,强化诉讼证明标准,完善证人的出庭作证制度,希望能对学者们的研究有所帮助。 This article analyzes in detail the evidential factors of miscrossed criminal cases, including non-standard evidence collection by prosecuting authorities, vague standards of litigation proof, and lack of witness evidence in court. According to the reasons of the analysis, this paper puts forward three specific suggestions on prevention and misjudgment, that is, forbids illegal forensics, strengthens litigation proof standards and perfects witness ’s testifying system in court, hoping to be helpful to scholars’ research.