当前，我国城市已步入提质增效转型期，传统治理模式存在的风险防控盲点难以抵御外在胁迫型风险和内在结构型风险的冲击，如何推动城市可持续发展成为现实问题。在这一背景下，“韧性”作为源头治理的目标向度与城市需求高度契合，成为全球城市建设和发展的新趋势、新愿景，智慧城市便是创造经济增长动能、破除大城市病问题、提高城市经济韧性的新尝试。智慧城市试点政策是在新的历史方位点上我国提出的一项供给侧政策解决方案，具有鲜明的中国特色。早在2013年，我国便在全国范围内启动智慧城市试点，并逐渐扩大试点范围、完善政策体系、细化具体内容。然而，经过十余年的政策试点，城市经济韧性能否通过智慧城市建设得到强化和提升呢？基于此，本文运用双重差分法探究智慧城市试点政策对城市经济韧性的影响，理清二者之间的内在机理，明确其政策效果发挥作用的异质性和影响机制，以期为指导智慧城市建设及城市经济韧性治理实践提供借鉴。

本文将我国先后展开的三批次智慧城市试点政策视为一项准自然实验，运用2008~2019年205个地级市的面板数据，检验智慧城市试点政策对城市经济韧性的影响。首先，本文明确阐述了智慧城市和经济韧性两大核心概念，整体概括了可持续发展理论、适应性循环理论和熊彼特经济周期理论，系统梳理了智慧城市试点政策的发展背景，在坚实的理论支撑下构建智慧城市试点政策对城市经济韧性影响的分析框架，并提出相应假设。其次，利用综合指标法构建涵盖抵御与恢复力、适应与调整力、创新与转型力三方面的经济韧性评价指标体系，通过熵值法计算得出各地级市相应的经济韧性水平作为被解释变量。随后，通过构建多期双重差分模型对政策效应进行评估，在基准回归结果的基础上采用平行趋势检验、PSM-DID检验、安慰剂检验验证结果的稳健性，从城市人口规模和经济规模的角度进行异质性分析，并运用中介效应模型检验创业效应和引领效应的传导机制。最后，得出本文的总体结论及相关政策建议。

研究发现：（1）智慧城市试点政策能够显著提升城市的经济韧性水平，这一结果在经过多项稳健性检验后依旧成立；（2）智慧城市试点政策对城市经济韧性的影响存在着明显的城市人口规模和经济规模异质性，从人口划分角度看，城市规模越大，智慧城市建设对经济韧性所带来的边际效应更明显，从经济规模角度看，政策效应呈现东部、中部、西部城市递减的规律；（3）智慧城市试点政策通过城市创业活力的创业效应和政府战略引领的引领效应两条路径提高城市经济韧性。针对所得结论，本文提出如下政策建议：有序推进智慧城市建设，发挥政策引领作用；构建差异化发展战略，激发城市经济活力；推动多元主体协同参与，市场和政府双强共治。

Currently, cities in China have entered a period of transformation to improve quality and efficiency. The blind spots in risk prevention and control in traditional governance models are difficult to resist the impact of external coercive risks and internal structural risks. How to promote sustainable urban development has become a practical problem. In this context, "resilience", as the ultimate goal of governance, is highly aligned with the urban demand and has become a new trend and vision for global urban construction and development. Smart cities is a new attempt to create economic growth momentum, eliminate urban diseases, and improve urban economic resilience. The smart city pilot policy, a solution relying on the supply side, is proposed by China at a new historical position, with distinct Chinese characteristics. As early as 2013, China launched a pilot program for smart cities nationwide, gradually expanding the scope of the pilot program, improving policy systems, and refining specific content. However, after more than a decade of applying these policy pilot projects, whether the urban economic resilience is strengthened and improved through the construction of smart cities remains to be seen. With this being considered, this thesis employs the differences-in-differences method to explore the impact of smart city pilot policies on urban economic resilience, clarifies the inherent mechanism between the two, and clarifies the heterogeneity and impact mechanism of their policy effects, in an attempt to provide reference for guiding smart city construction and urban resilience governance practices.

This thesis regards the three batches of smart city pilot policies launched in China as a quasi-natural experiment, and uses panel data from 205 prefecture level cities from 2008 to 2019 to test the impact of smart city pilot policies on urban economic resilience. Firstly, this thesis elaborates on the two core concepts of smart cities and economic resilience, summarizing the theories of sustainable development, adaptive cycle, and Schumpeter's economic cycle. It systematically reviews the development background of smart city pilot policies, constructs an analytical framework for the impact of smart city pilot policies on urban economic resilience with solid theoretical support, and proposes corresponding hypotheses. Secondly, using the comprehensive indicator method, a comprehensive economic resilience evaluation index system covering resistance and resilience, adaptation and adjustment, innovation and transformation is constructed. The corresponding economic resilience levels of each prefecture level city are calculated using the entropy method as the dependent variable. Subsequently, a multi period differences-in-differences model is constructed to evaluate the policy effects. Based on the benchmark regression results, parallel trend tests, PSM-DID tests, and placebo tests are used to verify the robustness of the results. Heterogeneity analysis is conducted from the perspectives of urban population size and economic size, and a mediation effect model is used to test the transmission mechanism of entrepreneurial and leadership effects. Finally, this thesis draws the overall conclusion and provides relevant policy recommendations.

The research finds that: (1) Smart city pilot policies can significantly improve the urban economic resilience of cities, and this result stands valid after multiple robustness tests; (2) The impact of smart city pilot policies on urban economic resilience shows significant heterogeneity in urban population size and economic scale. From the perspective of population division, the larger the city size, the more significant the marginal effect of smart city construction on urban economic resilience. From the perspective of economic scale, the policy effect shows a decreasing tendency form cities in the eastern, to the central, and finally to the western cities; (3) The smart city pilot policy enhances urban economic resilience in two ways: the entrepreneurial effect of urban entrepreneurial vitality and the leading effect of government strategic guidance. In response to the conclusions drawn, this thesis proposes the following policy recommendations: orderly promote the construction of smart cities and give full play to the leading role of policies; Build a differentiated development strategy to stimulate urban economic vitality; Promote the collaborative engagement of multiple entities, and promote the dual governance of the market and government.