| Small credit in rural area is a special credit way and comprehensive technical service to enforce Loan fund to impoverished population in concordant to specific arrangement,theory,target in certain region. As the fact that rural economy is backward, proportion of the impoverished population is higher, and the peasants lack the fund for production, to promote small credit in rural area and maintain sustainable development have practical significance. Since small credit was introduced to undeveloped west region in 1990's, it played an important role in enlarging effect of finance resources disposition, increasing the farmer's income, decreasing impoverished population On the other hand, there were a lot of problems which attracts people's attention. So the researches on the restrictive factors and settlements during the sustainable development process have the practical significance.The article consists of four parts. The first part outlines related theories of sustainable development of the small credit in rural area, and briefly comments the overseas small credit successful practice and experience in rural area; The second part describes present situation of small credit in undeveloped west region; The third part analyzes restrictive factors thoroughly; The fourth part gives some suggestions on seven aspects including formulating and perfecting legal laws and regulations, widening capital sources, progressing the interest rate market, advancing and standarding the implement of small credit, and improving the external environment to fulfill sustainable development. |