The Five-Countries in Central-Asia border on Xinjiang in the West China, research have been performed in this area, the gists of the division of tectonic units are different from each other and the results are different in a thousand and one ways. According as the investigations of sedimentary formation, conformation, intrusive rock and so on, a new division of tectonic units come forth, and there are five first-level tectonic units, sixteen second-level tectonic units and twenty six third-level tectonic units.