At present, the adverse effects of changes in the external environment are deepening, and China's economic operation still faces many difficulties and challenges.ufficient domestic effective demand is an important aspect of this. The Central Economic Work Conference focuses on expanding domestic demand in an all-round way, and proposes to "vigor boost consumption and improve the efficiency of investment". Further enhancing the vitality of regional development and optimizing the structure of domestic demand at the regional level is an important way to effective demand. The economic development level and the stage of industrialization in different regions are different, and there are significant differences in development among regions. Optimizing the layout investment and consumption in different regions, and promoting the formation of a reasonable pattern of investment and consumption within and between regions, will help to achieve the continuous expansion of domestic demand, and promote the balanced and coordinated development among regions. 

Investment and consumption have a mutually influential and restrictive relationship. Investment growth is conducive to increasing employment opportunities and improving residents' income, and the in income will enhance residents' consumption capacity, which in turn will lead to new investment. The smooth cycle between investment and consumption will promote the long-term growth of the or regional economy. Insufficient investment can lead to insufficient consumption, which may trigger an economic recession. Consumption is an important driving force for economic growth and is also the purpose of production. If excessive emphasis is placed on investment, resulting in an imbalance in the investment-consumption structure, it will lead to overcapacity and waste of.

Studies show that in the initial stage of industrialization, the investment rate in a country or region will rise significantly, while the consumption rate relatively decline. In the later stage of industrialization, the investment rate begins to decline, and the consumption rate gradually rises, and eventually both tend to stabilize. a macro perspective, China has always maintained a high savings rate, and overall, there is insufficient consumer demand and a high investment rate. Looking at the regions, the rate in the eastern coastal areas is too high, and the consumption rate is too low, which is very mismatched with its development stage; the urbanization and industrial in the central and western regions started late, and the old industrial bases such as Northeast China are facing major opportunities for comprehensive revitalization, and there is still a lot room for improvement in the investment rate in these regions. The current phenomenon of unreasonable investment and consumption structure restricts the effectiveness of expanding domestic demand in an all-round way "All-round" means that the expansion of demand should be stronger in terms of strength, broader in terms of scope, more policy tools should be used, and the benefits achieved should be greater. In this process, it is necessary to coordinate the relationship between investment and consumption at the regional level, further optimize the layout, and enhance.