This paper analyzes the internal components of driving forces in rural economic development from the demand side and the supply side. This paper not only measures the index from 1992 to 2018, but also analyses the internal driving forces that forms the transformation of driving force in rural economic developmentin each stage.Based on the strategy of rural revitalization, focusing on industrial prosperity, this paper puts forward the realization mechanism of cultivating new driving forcein rural economic development, promoting the transformation and upgrading of rural industries and the driving force of scientific and technological innovation.It is found that the development of China's rural economy is the result of the joint action of six sub-driving forces. In order to promote the transformation of driving force and the cultivation of new driving force, it is necessary to promote the integration of rural industries, combine the scientific and technological innovation with modern agriculture, strengthen the construction of rural personnel, improve the rural financial service system, and increase the financial input for supporting agriculture.