中文摘要：

若要侵权人承担责任,则因果关系认定是必不可少的。在不作为侵权责任中,因果关系认定尤显困难。根据是否有介入因素、介入因素之不同,可分为三种情形:一是不存在自然力或第三人行为介入的情形下,不作为与损害后果之间因果关系的认定;二是在自然力介入时,不作为与损害后果之间因果关系的认定;三是在第三人不法行为介入时,不作为与损害后果之间因果关系的认定。其中条件规则、相当因果关系规则、可预见规则、比例因果关系规则、替代原因规则均发挥着重要的作用。

英文摘要：

Causation is a key factor in deciding whether any liability should be imposed on a tort-feasor,and it is more difficult to determine causation in cases involving tort liability for omission.According to the difference in intervening factors,three different circumstances can be established: one is the determination of causation when natural force or the third party does not interfere;one is the determination of causation when natural force interferes;and another is the determination of causation when the third party interferes.Besides,condictio sine qua non,the adequate theory,the foreseeability rule,the proportional causation rule and the superseding causation rule all play an important role therein.