Abstract: Based on the daily air quality index (AQI) data of 343 districts in China in 2015, the spatial pattern of air pollution in China is analyzed by taking the districts in administrative divisions as the smallest spatial unit.Furthermore, The influence intensity of driving factors is also quantitatively evaluated by using geographic detector model. The results showed that:①Air pollution in China has the characteristics of "dual-center" spatial agglomeration, including two high-value centers in North China and Northwest China, and two low-value centers in South China and Northeast China.Air pollution in China has the characteristic of "two centers" spatial agglomeration with two high-value centers in North China and Northwest China and two low-value centers in South China and Northeast China. ②The natural factors that affectthe distribution of AQI in China are quite complex, which requires a specific analysis of specific problems. The socio-economic factors affecting the distribution of AQI in China can be divided into four categories:population, industry, living consumption and environmental maintenance.