The system uses a single photon ionization time-of-flight mass spectrometer (SPI-TOF-MS) as the core analytical component with a linear range of up to four orders of magnitude. More than 300 atmospheric VOCs can be analyzed simultaneously on-line with a resolution better than 2000 FWHM (toluene). Real-time access to the distribution of pollutant concentrations and the pattern of change, and can quickly establish the regional pollution distribution map. The system is equipped with a powerful navigation data processing software, which can provide informative navigation reports and pollution analysis reports according to customers' needs; providing powerful data support for the precise management of VOCs.