Grassroots pilot programs entering the central decision-making agenda is not a spontaneous occurrence but rather the result of meticulous planning and continuous efforts at the grassroots level. The initiative of grass-roots initiatives can drive policy creation, local policy pilot and influence the central decision-making agenda. This article follows the logic of "concept construction - case demonstration - framework generation" to analyze the complete process and mechanism of the pilot program's entry into the central decision-making agenda through grassroots autonomy. Case analysis is supplemented by shadow cases to conduct process analysis and mechanism mining, and the categorization and practical representation of the concept of political momentum are summarized. Based on the case analysis of "Xiaogang Village in Science and Technology field", explores and summarizes the types, characteristics, and functions of four political momentum: consensus momentum, propaganda momentum, alliance momentum, and decision-making influence momentum. It also analyzes the key internal agency mechanisms that enable grassroots pilot policy plans to enter the central decision-making process. The case study found that various types of political momentum embedded in grassroots autonomous policy creation and policy pilot activities have influenced grassroots pilot policy plans to enter the central decision-making agenda through consensus building, expanding influence, gaining recognition, and triggering potential energy. It has constructed a theoretical framework for the role of political momentum in the creation and pilot behavior of grassroots autonomous policies, extracts and enriches the localized expression of Chinese public policy research.

基层试点方案进入中央决策议程并非是自然而然的,而是经过基层精心策划和不断努力的结果,基层能动性的发挥具有驱动政策创设、局部政策试点和影响中央决策议程的作用。本文按照 “概念构建-案例实证-框架生成”的逻辑,分析了试点方案通过基层自主助推,最终进入中央决策议程的完整过程机制,将个案分析辅以影子案例开展过程剖析与机制挖掘,归纳了政治动能概念的类型化及其现实表征。基于 “科技界的小岗村”的知识产权权属改革个案分析,挖掘归纳出共识式动能、宣传式动能、结盟式动能、决策影响式动能四种政治动能的类型、特点和功能,剖析了基层试点政策方案之所以能够进入中央决策议程的关键内在能动性机制。研究发现,蕴含在基层自主创设政策行为和政策试点中的多种类型的政治动能以凝聚共识、扩大影响、获得认同和触发势能的方式影响基层试点政策方案进入中央决策议程。本文构建了政治动能作用于基层自主政策创设与试点行为的理论框架,提炼并丰富了中国公共政策研究的本土化表达。