Abstract: Abstracts: VOCs from the gas stations have been one of the key sources of atmospheric O₃ pollution in China due to their high species activity and high ozone formation potential. To understand the changes in gasoline VOCs emissions from gas stations in China, the AP-42 method recommended in the technical manual for the preparation of anthropogenic air pollutants inventory developed by the United States Environmental Protection Agency (US EPA) was used to calculate the VOCs emissions from gas stations based on the analysis of the monthly gasoline consumption in 31 different provinces of China Mainland from 2019 to 2021 and the monthly changes of the environmental temperature in the provincial capital cities (excluding data from Hong Kong, Macao, and Taiwan regions). The monthly change of gasoline VOCs emission factors (EFs) of gas stations from 2019 to 2021 was calculated quantitatively. The spatial-temporal characteristics of gasoline VOCs emissions from gas stations were studied. The results showed that: (1) The VOCs EFs in representative provincial capital cities showed obvious monthly change tendency. The highest EF occurred in July or August, and the lowest appeared in December or January. Themonthly EF difference could reach 32.2%-290.6% among different cities in 2019. (2) From 2019 to 2021, the VOCs emissions from gasoline stations were about 222 thousand tons, 246 thousand tons, and 263 thousand tons, respectively, showing a monthly trend of first increasing and then rapid decreasing. The highest monthly emissions occurred in July or August, while the lowest appeared in February, leading to the maximum monthly emission difference of 125.3% in 2019. (3) The monthly VOCs emissions from gas stations in different provinces of China were quite different. Among the seven geographical regions in China, the Northeast China region had the largest variation of monthly emission of 296.0% (in 2021), and the South China region showed the smallest difference of 62.6% (in 2020). The research shows that the monthly VOCs emissions of gas stations in different regions of China vary greatly, and the focus of emission control is on Eastern, Central and Southern China in summer.