作为经济学最核心内容的竞争理论 ,其发展几乎贯穿了整个经济学说历史演变的全过程。但总体来说 ,这一研究脉络的分析方法主要限于理想化的、静态的、均衡的分析 ,因而不能很好地解释市场失败和竞争的激烈争夺过程 ;对竞争必然促进经济福利的盲目信念也使其忽视了对经济生活中经常存在的过度竞争现象的研究。本文认为 ,至少从经济福利角度来看 ,确实存在竞争强度过大并造成经济效率和经济福利损失的过度竞争。在存在过度竞争的情况下 ,政府限制潜在竞争者进入的政策不一定是合理的 ,重要的是应严格区分“是否存在过度竞争”和“是否应该限制竞争”这两个论点 ,在此基础上找到消除过度竞争诱因的政策手段 The theory of competition, which is the core content of economics, goes through almost the whole process of historical evolution of economic theory. On the whole, however, the analytic approach to this research context is mainly limited to idealized, static and balanced analysis and thus fails to explain the fierce competition for market failure and competition well. The blind belief that competition must promote economic welfare also Ignoring the study of the phenomenon of over-competition that is often found in economic life. This paper argues that, at least from the economic welfare point of view, there is indeed over competition for excessive intensity of competition and loss of economic efficiency and economic welfare. In the case of excessive competition, the government’s policy of restricting the entry of potential competitors may not be reasonable. It is important that the two arguments of “whether there is excessive competition” and “whether competition should be limited” should be strictly distinguished. On the basis of this Find policies to eliminate incentives for over-competition