本文从城市规划法制的历史进程入手，描述了从计划体制到市场体制规划法制的地位变迁．而后进一步从规划的编制、规划的管理、规划的合理性与科学性、规划管理的权威性与严肃性等角度分析了规划法制的地位、作用及原因．文章最后提出了城市规划依法行政时应注意的几个问题。 This article begins with the historical process of urban planning law and describes the change of status from the planning system to the legal system of market planning. Then further analyzed the status, role and reasons of the planning legal system from the aspects of planning, planning management, rationality and science of planning, authority and seriousness of planning management. Finally, the article puts forward several issues that should be paid attention to when planning city administration according to law.