在人類胚胎操作與複製、墮胎、安樂死、胚胎幹細胞研究發展與醫療複製等關於生命科技的法律問題中，總是引起倫理與法律爭議。特別是因為這些科學技術操作的客體正是人本身，而人卻正是法秩序的主體。本文透過德國學者何斯特對於聯邦憲法法院墮胎案判決的挑戰，以及學界的反駁言論，呈現與反省憲法法院承認胎兒具有憲法生命權保障主體地位的理由論證。

The legal discussion of life technology in mankind operation and duplication of the embryo, abortion, euthanasia, the research and development of the embryo stem cell and the medical cloning always causes the controversies of ethics and law. Especially for the reasons of the object these scientific techniques operate is exactly mankind, but mankind is exactly the subject of the order of law. Through the defiant speech to the judgment of the abortion case of The federal constitutional court of the German scholar Norbert Hoerster and the contradictory speech of the academic circles, this article presents and examines the reasoning made by The federal constitutional court of admitting the fetus has the constitutional standing of the right of life guarantees.