Urban parks are crucial urban ecological spaces that play a significant role in maintaining,?enhancing,?and improving urban ecosystem services. People’s pursuit of high-quality life drives the evolution of ecosystem services, and cultural ecosystem services receive increasing attention. However, the research on the spatial pattern characteristics of cultural services and the influence elements of urban park ecosystem is still weak. This study focused on?239 urban parks in?Hangzhou?main urban area?to assess?cultural ecosystem services?using?Weibo data. Spatial heterogeneity?in?the spatial patterns and influencing factors of?park cultural ecosystem services was?analyzed using?gradual multiple linear regression and geographical weighted regression models. The results show that: (1) There is a noticeable spatial distribution difference?in?cultural ecosystem services?among?urban parks in Hangzhou main urban area. The parks with cultural ecosystem services below 0.44 are concentrated in Gongshu District, Xihu District and Shangcheng District. Parks with?services ranging from 0.45 to 0.54 exhibit double core aggregation, while those with services above 0.55 show?multi-core aggregation distribution,?covering a wider area?and involving?more?parks. (2) Gradually multiple regression analysis results show that the urban park area, NDVI(normalized difference vegetation index), park water landscape, road network density, richness index and aggregation index are the main influencing factors of park cultural ecosystem services. Among which, the NDVI, urban park area, park water landscape, patch richness index,?and aggregation index have?significantly positive?impact, while road network density has significantly negative impact. (3) Geographical weighted regression analysis show that different influencing factors have different positive and negative effects on park cultural ecosystem services, with obviously spatial heterogeneity. The urban park area, NDVI, park water landscape and patch richness index have significantly positive effects on park cultural ecosystem services. The park water area proportion, road network density and park PM2.5 concentration have significantly negative effects on park cultural ecosystem services. The population density, impervious area proportion, patch number and contagion index have positive and negative effects on park cultural ecosystem services. The influencing factors of the cultural ecosystem services of the park from high to low intensity are the park network density, population density, NDVI, impervious area proportion, park water landscape, patch richness index, urban park area, patch number, park PM2.5 concentration, contagion index and park water area proportion.