中文摘要：

中国实现了国民经济的长期高速增长,但已面临着突出的结构性难题。针对这一问题,不循以投资、消费和出口论证未来经济增长速度的传统路径,而对支持经济增长的资源（能源）、环境（承载力）及建立在资源环境基础上的城镇化和发展模式等支撑系统能力进行了分析。在这些分析基础上,进行了综合集成研究并得出结论：中国经济将较快地进入中速增长。中速经济增长,将为建设经济强国和实现中国和谐社会提供重要的机遇和空间。

英文摘要：

China＇s national economy has experienced a long period of rapid growth, but prominent structural problems have already appeared. Instead of following the traditional research approach of investigating the speed of future economic growth through investment, consumption and export, this article analyzes the capacities of systems which support economic growth, including resource（energy）, environment（bearing capacity）and the urbanization and development patterns on the basis of resources and environment. It includes seven aspects： 1 It points out that the long period of high-speed-but-low-efficiency economic growth has led to the structural problems at the current stage. 2 It analyzes the serious situation of China＇s environmental pollution. 3 It argues that excessive consumption of natural resources may bring about severe national security issues. 4 It indicates that urbanization is the most important supporting factor of the high-speed economic development of our country.5 It holds that the development patterns of＂world factory＂of low-end products and relying on investment which have been practiced for a long period of time are important concepts and supports of the high-speed economic development of China. 6 It also argues that China has taken full advantage of backwardness which has limits in fact. 7 Finally, based on practice and international experience, it analyzes the relationships between the speed of economic growth and employment, the influence of the country, and economic transformation briefly. Based on these analyses, a meta-synthetic research is conducted and the following conclusions are arrived at： China＇s economic development will enter a stage of moderate-speed growth rather quickly. The economic growth of a moderate speed will create significant opportunities and spaces for building economic superpower and achieving a harmonious society in China.