The idea of cloning technology was first put forward by German embryologist in 1938. 1952, scientists first carried out cloning experiments with frogs, and then people continued to study cloning technology with various animals. Because of the little progress in this technology, the research work once entered a trough in the early 1980 s, and later some people cloned it successfully with mammalian embryonic cells. 1On July 5th, 1996, British scientist Dr Ian Wilmut cloned a live sheep from adult sheep somatic cells, which brought a major breakthrough in the research of cloning technology. It broke through the technical difficulty that only embryonic cells could be used for animal cloning in the past, and achieved the goal of animal cloning with somatic cells for the first time, realizing animal replication in a higher sense. The goal of studying cloning technology is to find a better way to change the genetic composition of domestic animals and cultivate animal groups that can provide consumers with better food or any chemicals they may need.