基于2011~2023年中国沪深A股上市公司数据，通过多时点双重差分模型探讨公共数据开放对绿色技术创新的作用路径及异质性特征。研究表明，公共数据开放显著推动企业绿色技术创新，通过优化企业投资水平、促进企业数字化转型和提高企业运营管理效率等机制发挥作用。进一步的异质性分析显示，数据开放平台上线的促进效应对环境保护重点城市企业、无政企纽带企业、高水平内部控制企业以及高新技术企业的影响更为明显。

This study examines the causal pathways and heterogeneous characteristics of open government data on green technological innovation, using a multi-period difference-in-differences model based on data from Chinese A-share listed companies on the Shanghai and Shenzhen stock exchanges from 2011 to 2023.The findings reveal that open government data significantly stimulates corporate green technological innovation. The mechanism analysis indicates that this effect operates through optimizing corporate investment levels, promoting digital transformation, and enhancing operational management efficiency. Further heterogeneity analysis reveals that the promotional effect of open government data is more pronounced for enterprises located in key environmental protection cities, those without government-enterprise ties, those with high-level internal controls, and high-tech enterprises.