The Chaos Model of Macro-Economy
宏观经济的混沌模型

On the basic of research on branch of attraction structure topology with the non linear quadratic differential equations, and by combining Kaldor's macro economy model, the paper puts forward the following theory: because the economy system parameter changes, the movement of macro economy is not only with an evaluating stability or cycle, but also with overlapping large or small cycle, therefore ,it will show rise and fall motion with scale symmetry. Starting from this macro economy model, we can naturally and logically infer the Neo classical economy theory, Keynes' macro economy theory and Lucas' rational expectation theory. Forthermore, this can explain much more phenomena of economic movement, such as equilibrium, cycle, shock, spontaneous wave motion, non expectation, random vibration and so on.