The dynamic behaviors of a three variable CSTR reaction system were analyzed. By using numerical simulation method, the variation process of the stability state along with the parameters was discussed. Several bifurcation models and the associated transition boundaries of the system were given. Analysis showed that the equilibrium point would change to periodical solution by Hopf bifurcation, and further to chaotic solution from period-doubling bifurcation. Combined with the reaction process of the CSTR, the reaction coefficient and the reaction velocity in the system will move from steady phase to periodic phase, and in the end to a ruleless chemical resonance state along with different ratios of content in input liquor.