Abstract: The difference-in-differences (DID) model is applied to study impact of establishment of national ski tourism resorts on urban ecological resilience, with panel data of 290 prefecture-level cities in China from 2015 to 2023 used in a quasi-natural experiment． The establishment of national ski tourism resorts was found to have significantly improved urban ecological resilience． Compared with non-pilot cities, the ecological resilience level of pilot cities increased by 0.5%, and the conclusion passed multiple robustness tests． Optimizing industrial structure and driving technological innovation were found to be important for national ski tourism resorts to improve urban ecological resilience． The impact of national ski tourism resorts on urban ecological resilience was heterogeneous among different types of cities, the policy’s impact was more significant in northern cities, especially small and medium-sized cities． It is concluded that deepening policy implementation and experience promotion, strengthening mediating effects of industrial structure upgrading and technological innovation, formulating differentiated regional policies are key measures for improving urban ecological resilience in the context of ice and snow economy．