It is understood that efforts in precise law enforcement are one of the greatest characteristics of environmental law enforcement in Beijing. On the one hand, Beijing's key sewage units have installed automatic monitoring facilities, data can be continuously monitored 24 hours; on the other hand, the scale of grid management has been reduced from the initial 3 *3 km to 100 *100 m, more accurately "locked" the problem area. Law enforcement officers check the hot grid system through the monitoring platform and mobile client every day, and carry out targeted on-site investigation according to the pushed alarm location, which improves the accuracy and pertinence of law enforcement.

Wang Yankui, head of the Faxuan Section of the Beijing Environmental Monitoring Team, said that a large area had been designated beforehand, such as some areas with poor air quality, while trying to use portable mobile detection equipment. "It will follow the track of the law enforcement vehicle in real time, showing the change of air quality concentration. We will follow this trajectory to find those areas with high concentration, which will be more conducive to finding the point where the violations of air pollution occur, and improve the accuracy and efficiency of our law enforcement.