Abstract: Choosing the Huagang Guanyu Park in the West Lake scenic spot, Hangzhou, as the object of study, this paper explores the relationship of the concentration of atmospheric particulates (PM2.5 and PM10), tourist volume, meteorological factors and types of plant communities during holidays and non-holidays, and probes into the characteristics of PM in the Huagang Guanyu Park during holidays from the macro, medium and micro views, so as to provide references and basis for the scientific construction of city parks. The results show that the concentration of atmospheric particulates are apparently different during festivals and other days. From the macro view, the main air pollutants of Hangzhou's urban areas during New Year’s Day in 2018 were PM2.5 and PM10, and the average concentrations during the festival were 102±41.51 µg.m-3 and 155±64.86 µg.m-3 respectively, which were 1.6 times and 1.7 times of the non-festival level. Yuhang District, Xiaoshan District and Xiacheng District were the most affected by the festival in Hangzhou. From the medium view, there arose peaks with acute and jagged amplitudes in the concentration of PM2.5 and PM10 in Huagang Guanyu Park during the festival, while there were troughs with smaller amplitudes in the afternoon during the non-festival days. The characteristics of the influencing factors are as follows: tourist volume is more correlated with the concentration of atmospheric particulates during the festival, and the sightseeing activities have greater impacts on the PM10; the influence of meteorological factors have a greater impact on PM10 than PM2.5. From the micro view, the concentration of PM2.5 on three pieces of green spaces with different plant communities are as follows: dense jungle > pure woods > lawn.