作者认为民间法研究对一些在建设中的国际大都市同样具有重要价值。本文以上海市浦东新区首创且普遍推行的“草根宪法”为例,深入考察了作为“草根宪法”实践创发地的上海市浦东新区合庆镇,分析了“草根宪法”的实践动力,及其对当地所带来的变化,并论证说明“草根宪法”作为民间法的特质及其功能。 The author believes that the study of folk law is also of great value to some international metropolises under construction. Taking the “grassroots constitution” pioneered and universally implemented in Pudong New Area of ​​Shanghai as an example, this paper examines in depth the study of “grassroots constitution” in Shanghai Pudong New Area as a “grassroots constitution” “And its changes brought about by the local government. It also argues that” the grassroots constitution "is the trait and function of the civil law.