Fast urbanization has resulted in serious environmental pollution. The polluted pattern distributed from central city to the country. Urban parks are the major areas for the green spaces in Beijing. Urban parks are not only the important public spaces for the leisure of residents and tourists, but also could response to the environmental pollution, such as soil metal pollution. In this study, we investigated soil fungal community under six common tree species in six urban parks that distributed from central city to the country, aiming to understand the characteristics of fungal community, including diversity and community composition, and the effect factors on fungal community. Soil fungal species, soil heavy mental, soil physical and chemical parameters were measured. The results showed that soil fungal community diversity, composition and dominant species were significantly influenced by soil pH, soil nutrient content, soil water content and Pb content through six parks. Soil fungal diversity was reduced with the increase of heavy metal Pb. Moreover, soil Pb content significantly influenced the dominated family species Basidiomycota, which occupied 73% of the total fungal community species. There was close relationship between community composition of soil pathogen and soil Pb content. It indicates a potential threat to human health from Pb pollution and consequent change in pathogens. Overall, our results provide insight into the importance of soil Pb modifying soil fungal communities in urban parks, increasing our knowledge of soil Pb pollution and being helpful for improving urban park management.