Taking tea industry in southern Shaanxi as the research objects,the economic analysis was made on the its industry cluster by using Porter's diamonds model. It was pointed out that the industry cluster was an inevitable choice for sustainable development of tea industry in southern Shaanxi. The main motivations of cluster come from the market,social,cultural and government and other factors. On the basis of the analysis,the competitive advantages of tea industry in southern Shaanxi were studied,such as natu...