Abstract: This paper took 32 counties (cities) of the Tibetan area in Sichuan Province as the samples, and constructed an index system of ecological agriculture regionalization, which consisted of 15 secondary indexes covering the 4 dimensions of agricultural resource environment, rural economy development, agricultural ecological pressure and infrastructure construction. The authors used the method of factorial analysis and cluster analysis, divided the Tibetan area in Sichuan into 3 types, including comprehensive development area of agriculture, forestry and animal husbandry in middle and upper reaches of high mountain and canyon areas of the Jinsha River and Yalong River (Ⅰ), comprehensive development area of agriculture, forestry and animal husbandry in upper reaches of high mountain and canyon areas of the Minjiang River and Dadu River (Ⅱ), and the original ecological animal husbandry development zone in the northwest plateau of Sichuan Province (Ⅲ), so as to properly use agricultural resources and provide theoretical support for the development and construction of ecological agriculture in Tibetan area of Sichuan Province.