The environmental air quality monitoring system is based on high-precision light scattering particle sensor technology, electrochemical gas sensor technology, PID sensor technology, and adopts pump suction sampling to monitor the concentrations of PM2.5, PM10, TSP, SO2, NO2, CO, O3, NO, TVOC in the atmospheric environment. It can also be equipped with meteorological monitoring (temperature, humidity, atmospheric pressure, wind speed, wind direction), noise monitoring, video monitoring and other functional parameters. Application of particulate matter and gaseous pollutant pollution monitoring in urban environments, construction sites, factories, mines, and other places