20世纪经济学发生了重大变化 ,广泛运用数学方法作为经济学的分析工具 ,使得经济学的概念和语言变得比较精确和完善。宏观经济的研究在过去的 10 0年中有着十分重要的地位 ,在相当多的时间里 ,经济学家更加注重宏观经济研究 ,这和经济学从纯理论的研究转向政策性研究、从规范研究转向实证研究有很大的关系。中国经济学则从空泛的抽象概念研究转向主要对现实经济问题的研究 ,一批中国经济学家正在用规范的研究方法研究复杂的中国经济问题。在新的世纪中 ,无论是国外的经济学 ,还是中国经济学 ,用经济学的方法与工具研究社会政治和法律问题将会成为一个重要趋势。同时 ,新世纪的经济学将会更多地从全球的视野关注现实经济问题 The great changes have taken place in the economics of the 20th century. The extensive use of mathematical methods as analytical tools in economics has made the concept and language of economics more precise and complete. Macroeconomic research has played a very important role in the past 10 years. For a considerable amount of time, economists have paid more attention to macroeconomic research, which has shifted from purely theoretical research to policy research in economics. From a normative study Turn to empirical research has a great relationship. China’s economics has turned from a vague abstract concept study to a research mainly on real economic problems. A group of Chinese economists are using a normative research method to study complicated Chinese economic problems. In the new century, both in foreign economics and in Chinese economics, it will become an important trend to study social political and legal issues with the methods and tools of economics. At the same time, the economics of the new century will focus more on the real economy from a global perspective