Economic Center City refers to the concentration of socio-economic activities in one or regions, affecting the city that is economically living around. According to its economic impact, it can be divided into national, provincial, regional or county economic center. Economic centers include production, commercial trade, financial services and other functions. Economic Center City generally has strong material foundation and industrial production capacity, with its many industrial products supply surrounding territories; commercial trade centers for materials, must have convenient transportation links and commercial trading institutions; at the same time, you must have economic activities Service financial industry. Due to the general industrial development in the economic center, frequent transportation is frequent, the population is dense, and the population of circulation is large, and there is a need to bring a series of environmental pollution and deterioration, and must pay full attention to environmental protection.