通过分析开发许可程序基本特征的演化,从郊区化中社会矛盾的加剧与政策目标的多元化、土地开发机制的转变、政府财政压力与行政裁量权的扩张、公众参与下政策议题的转变等方面,把握规划调控政策的发展方向及其社会经济背景,进而深入剖析开发许可手段和内容的转变,探讨美国开发许可制度的发展趋势。 By analyzing the evolution of the basic characteristics of the development permit procedure, from the intensification of social contradictions and the diversification of policy objectives in suburbanization, the change of land development mechanism, the expansion of government fiscal pressure and administrative discretion, and the transformation of policy issues under public participation , Grasp the development direction of planning and control policies and its social and economic background, and then analyze in depth the transformation of the means and content of the development permission and explore the development trend of the development permission system in the United States.