| In this paper, we discuss two types of models-----the model that discuss the equilibrium of product market, financial market, and labor market and the endogenous economic growth model. In the endogenous economic growth model, we discuss the deterministic growth model and the stochastic growth model. First, the model of the equilibrium of product, financial, and labor market is presented. In this model, we discuss the effects of finance, tax and monetary policy and expect, imports and exports in the past years. It can be seen the factors that impact the circulation of economic in our country through these analysis. Second, we add regional disparity to Uzawa-Lucas model. By the method of dynamic optimization, a three dimension dynamic system is obtained and exists a convergent path. We educe the relationship between the regional disparity and the marginal production of the physical capital, the ratio of the consumption and capital, the ratio of the production and capital. The paper shows the difference among the regions leads to the more growth rate in the developed areas, and the less growth rate in the poor areas, which produces the more gap between the rich and poor areas. In the steady state, the rich areas have the more marginal production and the less working times, and the poor areas have converse conditions. At last, in an endogenous economic growth model with the stochastic shock, the paper discusses the effect of the uncertainty when the uncertainty is exogenous. We educe the ratio of the consumption and capital, the ratio of the production and capital, and the expectation growth rate. The results show that the increase of uncertainty will decrease the trend of the representative household's consumptions, and may result in the losing of welfare. |