The American Brandeis School proposed that the Sherman Act should oppose big business,and even if big business does not violate the law,their existence will still pose a threat to social democracy and justice.China's anti-monopoly law,as a product after the planned economic system over 40 years,reflects the socialist market economy needs competition mechanism to allocate resources and coordinate social supply and demand.The purpose of China's anti-monopoly law is to protect the process of market competition,but not to protect competitors.In order to make the anti-monopoly law comprehensively and effectively protect the market competition order,inclusive of opposing administrative monopoly,China should deepen its economic reform and implement its political reform.