市场垄断程度对社会福利的影响——基于价格不确定性

The Impact of Monopoly on Social Welfare——Price Uncertainty Approach

采用社会福利和价格不确定的有关理论与方法,研究了非完全竞争市场的垄断程度对社会福利所造成的影响。研究结果表明：垄断程度给社会福利带来负面影响,并且随着垄断程度的提高,负面影响日显,与市场垄断程度呈负相关。在一定条件下,即使考虑价格不确定性因素,社会福利也是随垄断程度的增大而渐减。

TI use the social welfare theory and method in the paper to analyze the impact of monopoly on social welfare.The research results indicates that the monopoly has caused the negative effect on social welfares,with the deeper monopoly,social welfare should much more negative;and the price uncertainty also affected the social welfares.on the theory of Consumer Surplus has discussed the impact of the degree of monopoly on social welfare in the non-perfectly competitive market,and found that there is a negative correlation between the degree of monopoly and social welfare.In addition,this paper also has analyzed the uncertainty of the price as a factor affecting social welfare and come to a conclusion：under given conditions,even considering of the uncertainty of the price,Social welfare is also increased with the decreasing of the degree of monopoly.