中国婴儿出生性别比自 2 0世纪 80年代以来持续升高 ,人口道德面临严峻挑战。因此 ,从人口伦理学的角度分析中国人口出生性别比持续升高的道德原因 ,阐释人口道德的生成机制 ,重建科学的现代的人口道德势在必行 The sex ratio at birth in China has continuously risen since the 1980s, and population ethics is facing severe challenges. Therefore, from the perspective of population ethics, it is imperative to analyze the moral reasons for the rising sex ratio at birth in China and to explain the formation mechanism of population ethics and to rebuild the scientific modern population ethics