Abstract: Firstly, this paper presents that the route of the control theory's development should be from practice to theory, and back to practice. Secondly, based on analysis of the current problem of intelligent control, this paper presents that the resolution of characteristic modeling of complicated systems should be the key to the establishment of intelligent control theory system. Thirdly, it briefly introduces the thought ,method and necessary matter condition of intelligent characteristic modeling. Accordingly, this paper presents the plan and structure of three kinds of intelligent control. At last, the essential theory and tool for developing intelligent control theory are discussed.