According to the analysis results of atmospheric PM2.5 sources in this city in 2013, dust sources accounted for 13.4% of the contribution from local emission sources. In order to accurately and quickly control road dust, the project is the first in China to establish a large-scale road dust grid dynamic management and control system. For the first time, real-time online monitoring data is used to establish a road dust dynamic emission list to accurately guide air pollution emergency measures and apply it to air quality assurance for large-scale activities. For the first time in China, online real-time monitoring data of dust has accurately guided greening, cleaning and sprinkler operations, providing a fast and convenient quantitative assessment method for regional road dust evaluation. The content is as follows: (1) It is the first in China to establish a grid management and control system for real-time monitoring of road dust in megacities. The system includes 453 fixed monitoring points and 10 mobile monitoring devices. The real-time data is directly transmitted to the management and control platform through wireless networks, forming a coverage The city's road dust grid online monitoring system has realized the collection of big data on road dust in Shanghai City and real-time management and control of dust emission characteristics of main roads and branch roads. The management and control system has been connected to the monitoring platform of the Shanghai City Environmental Information Center and has a very high influence across the country. More than 20 local environmental protection departments including Shenzhen, Beijing, Chongqing, and Guilin have come to inspect and study. (2) A localized emission factor for road dust in megacities has been established to accurately calculate the dust emissions of different types of roads, providing a powerful tool for road dust control. For the first time in China, this project has built two methods for monitoring the localized emission coefficient of road dust. One is a rapid vehicle-mounted detection method. This method obtains the PM concentration value and background PM value by setting sampling ports on the vehicle's tires and roof in real time to calculate the localized emission coefficient. The other method is to arrange TSP samplers vertically on both sides of different roads to monitor the TSP concentration at different heights on both sides of the road in real time, and calculate the emission coefficient based on meteorological factors and real-time concentrations. This project obtains localized emission coefficients for different roads (main roads, secondary roads, branch roads, etc.) in Shanghai City, and uses the emission coefficients to calculate road dust in the second national pollution source survey in Shanghai City. (3) It is the first in China to accurately guide prevention and control measures such as road cleaning and sprinkler operations through real-time monitoring data on road dust, providing effective means for road dust control. An online APP for road dust has been developed, which provides a quick and convenient means to inquire about real-time pollution sources of road dust. At the same time, monitoring and early warning information is pushed to regional leaders through SMS and WeChat in accordance with management needs to achieve rapid rectification of pollution impacts. Relying on the real-time data of the project, the municipal environmental authorities of Shanghai City have conducted assessments and notifications on road dust control in various districts. Baoshan, Putuo, Xuhui, Huangpu and other districts have also gradually carried out rankings and evaluations of regional dust prevention and control, actively promoting road dust control in various districts. Real-time dynamic observation of road dust is realized based on mobile monitoring equipment, with a time resolution of 5 seconds. During the first CIIE in China in 2018, this platform was relied on to monitor road dust emissions in real time, providing strong support for the guarantee of major activities. (4) It has taken the lead in formulating technical specifications and technical standards for road dust monitoring, including: technical specifications for road dust data review, technical specifications for quality assurance and quality control for online road dust monitoring, and technical specifications for online road dust monitoring, operation and maintenance, providing support for road dust monitoring data. (5) The project has applied for 1 invention patent, authorized 1 utility model patent, obtained 10 software copyrights, published 6 papers (1 article included in SCI/EI), and formed 3 local regulations.