Abstract: Public data open platform has dual attributes of governance and production. It is a new carrier to fully release the value of data elements and has an important impact on urban economic resilience. Based on the dual attributes of governance and production of public data, and using China city-level data from 2009 to 2023 and Shanghai and Shenzhen A-share listed company data, the empirical study shows that, firstly, public data opening has a significant effect on urban economic resilience. Secondly, public data opening can promote urban economic resilience through two key channels: collaborative governance optimization and supply-demand targeted adaptation. Thirdly, the better the initial development endowment of the city, the larger the population scale, the better the industrial foundation, the better the development state of the digital economy, the higher the supply level of digital technology, the stronger the support of digital infrastructure, the higher the activity of the data element market, the better the market competition environment and the more perfect the digital rule of law construction, the more significant the urban economic resilience enhancement effect released by the opening of public data. Based on the above conclusions, the government should further strengthen the collaborative governance function and supply-demand matching efficiency of the public data open platform in improving urban economic resilience, effectively enhance the overall operation strength of the city and improve the urban economic resilience by constructing a cross-domain linked digital governance network and promoting the formation of a data-driven integrated urban operation ecology.

Key words: public data openness, urban economic resilience, collaborative governance, supply-demand adaptation