本文分析传统侵权法中所存在的漏洞,指出机会损失理论适用具有现实性意义。美国各州对适用该理论有两种规则:松散因果关系规则(“relaxedcausation”)和纯机会损失规则(“pure”lossofchance)。笔者分析两种规则中存在的问题,指出纯机会损失规则在法律适用上是具有可行性的,并对该规则进行分析改进。这对我国机会损失理论的适用具有借鉴意义。 This article analyzes the loopholes existing in the traditional tort law and points out that the application of the theory of opportunity loss has realistic significance. The states in the United States have two rules that apply to this theory: the loose causation rule ( “relaxedcausation ”) and the “pure ” lossofchance. The author analyzes the problems existing in the two rules, points out that the rule of pure chance loss is feasible in the application of law, and analyzes and improves the rules. This is a reference for the application of the theory of opportunity loss in our country.