政府管制的利益不可能匀质分布,很容易遭到管制性征收规则的阻遏。互惠原理可以适当磨平征收规则的刚性棱角,在法理上扮演救赎的角色。互惠原理在美国经历了经济互惠和社会互惠两个阶段,分别形成各自的规则。北京的汽车单双号限行常态化措施符合社会互惠原理,不构成管制性征收。 Interests of government regulation can not be homogeneously distributed, it is easy to be deterred by the rules of expropriation. The principle of reciprocity can properly smooth the rigid edges and corners of the collection rules and play the role of redemption in jurisprudence. The principle of reciprocity has experienced two stages of economic reciprocity and social reciprocity in the United States, forming respective rules. Beijing’s car single and double number line limit normalization measures in line with the principle of social reciprocity, does not constitute a regulatory levy.