Abstract: Since the founding of P.R. China, the Chinese three-generation leading collectivity of the CPC have carried out different development policies in China's West according to the Chinese social situations. This paper sorts out these policies including as the thinking for development, development background, the contents of the development of China's West, as well as its results, so as to understand the process of development and to summarize the experiences and lessons getting from the development practice, in order to serve for today's socialist construction.