By using the DEMATEL method, the 20 factors in four types mat affect the rural cooperative economic system of Changjitu Area are analyzed. The comprehensive influencing matrix of each factor. and its influencing degree, central degree and reason degree are obtained. - - which indicates that macro economic system, law and regulations, thought pattern, government concept have great functions on rural cooperative organization. But the system environment is the major factor that affects the development of cooperatives. So the perfection of macro-economic system, laws and regulations, regional developmental strategy, logistics system, land system, households registration system, education system, administration system should be conducted to promote the rural economic development of Changjitu Area.