中文摘要：

从政府规制定价的角度，在信息不对称情况下分析了政府对自然垄断行业的规制定价与效率损失，比较了政府规制和未进行规制时的价格、消费者剩余和社会福利变化．从而得出：尽管信息的不对称性使政府对自然垄断行业的规制产生效率损失，但政府对自然垄断行业进行规制时的经济效率仍比行业垄断时要高．

英文摘要：

Based on the asymmetric information, this paper analyzed the price-regulation and efficiency lose of natural monopoly industry, and also compared the changing of consumer surplus and social welfare between regulation and unregulation. It drew the conclusion that even though the asymmetry caused efficiency loss of government＇s rules on the natural monopoly industry, the economy efficiency with government＇s regulation on monopoly industry is higher than that with monopoly industry.