During the "Eleventh Five-Year Plan" period, the economic and social development will witness many major changes both within and outside China and this has made it certain that the economic and social development will take coordination and harmony as the goal during the "Eleventh Five-Year Plan" period and even for a longer period of time.

In 2002, the national population kept growing, the agro-population kept migrating to urban areas, the population of labor age kept increasing, the ratio of total number of dependents decreased, and the "Law of Population and Family Planning" was formally implemented.

Start with analyzing the development and driving force of large central cities, this paper believes that it's necessary for the large cities to construct satellite cities and extend toward rural area.

The paper summarizes the basic situation of Japanese public investment since the collapse of the bubble economy and points out that some conditions are required for public investment to stimulate economic growth.