The study based on national income aggregate demand function indicates that the ratio between the investment-output efficiency and the consumption-investment rate has a relationship of inversed U shape,and its maximal value lies on the dynamic equilibrium of the consumption-investment rate and the investment growth rate.

By analyzing related information on the comparison among the number of civil aviation s passengers,the number of train s passengers,mileage of civil aviation routes,the number of tourists from foreign countries and gross national income,this paper builds simple and multivariate linear model,as well as analyzes the factors that influence .

In recent years,the highest growth rate in the initial distribution of gross national income is enterprises\',followed by the Government\'s,the residents\' relatively slower.