随着城市机动车数量逐年增加,机动车单双号限行已经成为很多城市缓解交通拥堵和大气污染的主要措施,虽然对交通和环境问题有短期的改善效果,但这种措施对公民自由驾驶造成了损害。本文主要通过分析机动车单双号限行在行政法上的合法性和合理性,理清单双号限行引起的政府和公民之间的矛盾。 With the increasing number of motor vehicles in urban areas, the single and double line restriction of motor vehicles has become the major measure for alleviating traffic congestion and air pollution in many cities. Although these measures have short-term improvements on traffic and environmental issues, such measures have caused the free driving of citizens Damage. This article mainly analyzes the legality and rationality of the single and double limit line of the motor vehicle in the administrative law, clears the contradiction between the government and the citizen caused by the limit line of the single and double numbers.