Abstract: The Qinghai-Xizang (Tibet) Plateau is Unique area in natural condition, there alpine vegetation is the richest and the widest distribution, the main types are the alpine scrub, the high-cold meadow, the high-cold steppe, the high-cold desert and sparse vegetation on alpine flowstone slope and the alpine cushion vegetation.These plant communities occupy the alpine belts between the upper line of forest and the permanent snow-line, and they distributively have horizontal regional differentiation from the southeast to the northwest of the Plateau. According to the vegetation characteristics of the vertical belts of mountains and climate condition of the various regions of the Plateau, it may be considered that the vertical vegetation belt spectra of the mountains in the southeast part of the Plateau belong to the humid type of the vertical belt in structure, and those in the center and the northwestern parts of the Plateau belong to the arid type. In addition, the diversify of alpine vegetation: arid. the ecologic-geographic distribution of the alpine cushion vegetation are also. discussed in this paper.