RESSET Air Quality Monitoring Big Data Platform contains PM2.5 and weather information data of 367 cities in China, including AQI, PM2.5, PM10, S02, N02, O3, CO and other monitoring items. All data are updated automatically every hour. The platform provides query and analysis of historical data since December 2013, mainly including real-time monitoring, monitoring curve, time interval statistics, urban analysis, urban distribution, provincial distribution, urban comparison, statistical ranking, calendar year analysis, association mining and other functions. It can be directly used in the design of experimental content of applied statistics related courses.