过剩经济的基本特征建国以来，我国经济运行的性质是逐渐演变的，改革开放以前相当长时期是卖方市场，改革开放以后经历了卖方市场、结构性买方市场、买方市场三大阶段。从供给不足、需求过剩的卖方市场转变为供给过剩、需求不足的买方市场是经济周期波动变化的正常表现，... Since the founding of the People’s Republic of China, the nature of China’s economic operation has gradually evolved. For a long time before the reform and opening up was the seller’s market. After the reform and opening up, it has gone through three major stages: the seller’s market, the structural buyer’s market and the buyer’s market. From the under-supply and over-demand seller’s market to the oversupply and under-buyer’s buyer’s market, it is a normal manifestation of the changing economic cycle ...