Poverty eradication is one of the three major battles in our country at the present stage and is a common subject for world development. It is the key to study the dynamic evolution model from poverty, poverty alleviation to wealth. This paper analyzes the causes of poverty from macro to micro, from the regional breadth, and extracts ten factors of poverty. Combined with the dynamic evolution model, this paper puts forward that "root" culture is the key to prevent the return to poverty and realize the stable eradication of poverty, and puts forward the strategy of cultivating the "root" culture of the poor people in the university library, which is of great significance for the realization of stable poverty alleviation in our country.