This study analyzes the chaos emerging mechanism through using logistic model according to the nonlinear character of Chinese real estate business cycle. The chaos emerging hypothesis is validated by the data in Chinese real estate market through nonlinear regression method. On the basis of comparing the different characters before and after entering the chaotic state, it can be found that the real estate bubble is prone to expanding and even breaking in chaotic field. And the main control factor is price-elasticity index of demand.