There are many specialized vocabularies in biology, and only a few of them can enter the public's field of vision, and clone is one of the few. The origin of clone originated in developmental biology, and its development can date back to a century ago. This article will briefly introduce the meaning of clone and some important breakthroughs in the history, and discuss the related ethical issues and the enlightenment of its development process, so that the readers can have a basic understanding of clone.