西方经济学在经过了几百年的演变之后，20世纪发生了较大变化。在过去的百年中，西方经济学的发展是与碰撞和裂变、斗争和困惑、异化与交融交织在一起的。　　一、政府或市场：永恒的一条主线　　迄今为止，西方资本主义国家市场经济发展大体经历了两个阶段，即早期自由竞争的 After several hundred years of evolution in Western economics, great changes have taken place in the 20th century. In the past century, the development of western economics has been intertwined with collision and fission, struggle and confusion, alienation and blending. First, the government or the market: an eternal main line So far, the development of the market economy in western capitalist countries generally experienced two stages, that is, early free competition