Abstract: Current economic crisis, triggered by sub-crime crisis in America in 2008, calls for a new and fundamental understanding of structure and dynamic process of economic system.Economic theory fails to explain it effectively, which is mainly caused by the constraints of its methodology-reductionism.As a research front of complex science, replacing reductionism with systemism, complex network gained a great breakthrough in many disciplines.This paper attempts to combine complex network with economics, and constructs industrial network theory and mathematic model, which depicts the structure and running process of industrial system comprehensively.Meanwhile, it creates conditions for computer simulation of industrial network, and finally supplies new thoughts and methods of economics.