At the beginning of May in 1965, geological researchers named Qianfang and Puqingyu went to the Yuanmon Danawu village to excavate the stratum of the early period of the Quaternary Period, unearthing two incisor teeth, which turned out to be similar with those of the Peking Men in features but earlier than them. By magnetic measuring, the teeth belonged to the ape of about 17 million years ago, which is a branch of the new species of perpendicular men in Asia. Historical relics shows that Yuanmon men can not only carry out hunting and collect foods with their tools, but also light fire for roasting the acquired foods. And from then on, they had outgrown the primitive era of eating raw birds and animals. Moreover, the discovery of Yuanmon men played a significant role in the human evolution and development.