Abstract: The complexity of economic systems leads to the difficulty to explain the economic change and factors of influence.This paper sets forth an effective method to the research of the complexity of economic systems.At the same time,by the method to build a self-organizing model for explaining the growth of GDP,it is analyzing the critical factors which influence our national economic growth.On the basis of analyses,the countermeasures are put forward.

Key words: self-organizing modeling, economic systems, GDP