In this paper, firstly we establish the three-dimensional environment pollution dynamical system which describes the relationship among the air quality index, population and economic growth. This mathematical model has been obtained after introducing the economical growth factors in the two-dimensional environment pollution dynamical system. Secondly we compute the the equilibrium points of the three-dimensional environment pollution dynamical system. And then we analyze stability of the equilibrium points by using the theory of differential equations, which can be shown to be available in the following simulation numerical results. Finally, a delayed feedback controller has been imposed on the three-dimensional environment pollution dynamical system, which may make the originally unstable system stable for some appropriate feedback coefficients. Moreover, numerical simulations illustrate the effectiveness of the feedback control.