Consumption，investment and net exports are three major components of demand to drive economic growth. Whether the ratio between them is reasonable directly impact the macroeconomy and sustainable economic development. Over the recent years，China’s investment rate kept rising，and the economic growth over relies on investment and export，thereby leading to the oversupply situation. If the imbalance status cannot be changed quickly，it will result in huge idle capacity，and cause other chain reactions such as the increase in bank non-performing assets，which immediately causes adverse effects on the sustained，rapid and healthy development of national economy. Taking effective measures to increase consumption and enhance the driving effect of consumption on economic growth is the fundamental way to alleviate this problem.