当前,我国经济发展正处于增长速度换挡期、结构调整阵痛期和前期刺激政策消化期“三期叠加”阶段,由于历史和现实原因累积的一些问题开始凸显:经济增长速度从高速转为中高速,经济结构亟待优化升级,产能过剩问题严重,房地产库存长期保持高位,杠杆率过高、债务增速过快、企业生产成本过高、发展不平衡现象严重……面对新的机遇和挑战,党的十八大以来, At present, the economic development in our country is at a stage of growth-shift, structural adjustment and pre-stimulus digestion. Some problems accumulated due to historical and realistic reasons have begun to highlight the fact that the rate of economic growth has changed from high speed to high speed In the mid-high speed, the economic structure needs to be optimized and upgraded urgently, the problem of overcapacity is serious, the inventory of real estate is kept at a high level for a long time, the leverage ratio is too high, the debt growth is too fast, the production cost of enterprises is too high, and the unbalanced development is serious. And challenges, since the 18th CPC National Congress,