Australian Premier Kevin Michael Rudd signed Kyoto Protocol on the first day on his position.This article interpretes the meaning of "greenhouse effects"and "global warming" in a scientific point of view.Then,it explains United Nations Framework Convention on Climate Change(UNFCCC) passed at United nations Environment and Development Summit which was taken in Dio Do Janeiro,Brazil in 1992.In addition,the article analyses Kyoto Protocol's economic effects for China.Kyoto Protocol is a literal act about the limitation of oxygen dioxide emission formed in 1997.