Abstract: Power list system is an effective system of restricting power, which is advantageous to the urban management law enforcement in accordance with the law. Power list system is to clearly define the nature and origin of urban management law enforcement power. Urban management law enforcement power has the characteristics of relative concentration, limitation and expansion. There are four legitimate sources of administrative power：power setting, legal authorization, administrative trust, administrative authorization. The source of the urban management law enforcement power has experienced an approach from administrative authority to administrative trust,then to power setting.Considering the natures and the lowlevel legal sources, the administrative regulations and laws applicable in the whole country should be made as soon as possible to promote the law enforcement power list system.

Key words: urban management law enforcement power, power list system, nature, legal source

摘要： 权力清单制度是制约权力的有效制度，有利于城管执法权的依法行使。权力清单制度要求明确城管执法权的性质和渊源。城管执法权具有相对集中性、配权限定性和极具扩张性的性质。行政职权的合法来源有职权设定、法律授权、行政委托、行政授权四种。城管执法权的渊源经历了一个行政授权—行政委托—职权设定的演变历程。鉴于城管执法权的性质和较低的法律渊源，为促进城管执法权力清单制度的顺利推行，制定适用于全国的城管执法行政法规和专门法律迫在眉睫。

关键词: 城管执法权, 权力清单制度, 性质, 法律渊源