过错责任、无过错责任和公平责任构成了我国侵权责任归责原则的三元化体系。以加害人和受害人为两条线索,通过定性分析和定量分析我们可以得出该体系的两条区分标准并发现它们之间的逻辑联系,同时以此为基础,在普遍接受的二元归责原则体系中准确定位公平责任原则,完成对三元归责原则体系的逻辑构建。过错推定实为一项证据规则,体现了在举证责任分担问题上法之分配正义,其归属于过错责任范畴,不涉及无过错责任领域更不能取而代之。 The fault liability, faultless liability and fair liability constitute the ternary system of the principle of imputation of tort liability in our country. Taking the perpetrators and the victims as two clues, through qualitative analysis and quantitative analysis, we can draw two distinguishing criteria of the system and discover the logical connection between them. At the same time, based on this, In the system of principles, we should accurately locate the principle of fair responsibility and complete the logical construction of the principle system of ternary imputation. The presumption of fault is actually a rule of evidence, which reflects the law of justice in the distribution of the burden of proof. It belongs to the field of fault liability and can not be replaced in the field of liability without fault.