In modern society, with the increasingly intensive population and high structures, incidence of harm cases induced by upper uncertain falling body is so high that can not be neglected by law.

• 在现代社会中，由于人口日益密集，高层建筑的不断增多而导致的不明高空坠落物(包括自行脱落的和人为投掷的)致人损害的案件己经屡见不鲜，成为社会上一个不可忽视的法律问题。