投资是企业财务管理的重要内容之一,投资效率将直接影响到企业的价值。在20世纪80年代,美国以及西方发达资本主义国家在石油、烟草以及广播等行业出现了严重的过度投资问题,引起了理论与实务界的广泛关注。我国在由计划经济向市场经济转轨的过程中,完成了国企的改制、上市并带动了民 Investment is one of the important contents of the enterprise’s financial management. Investment efficiency will directly affect the value of the enterprise. In the 1980s, the United States and the developed western capitalist countries experienced serious over-investment in the oil, tobacco and broadcasting industries, which aroused widespread concern in theory and practice. In the process of transition from a planned economy to a market economy, our country has completed the restructuring of state-owned enterprises, went public and led the people