As the problem of vehicle exhaust pollution becomes increasingly serious, the Ministry of Ecology and Environment of the People’s Republic of China requires all China VI heavy-duty vehicles to install onboard remote emission management terminals to monitor their exhaust emissions. This study designs a zoning monitoring platform of heavy-duty vehicle pollutant emissions based on a distributed micro-service architecture. The platform collects real-time data of all the heavy-duty vehicles with onboard terminals in a designated area and quantifies the main exhaust pollutants of heavy-duty vehicles, namely nitrogen oxides and particulates. Meanwhile, an algorithm determining the specific administrative district to which a pollutant belongs is proposed to count and display the total pollutant emissions of heavy-duty vehicles in each administrative district. The platform is deployed in the Zibo Environmental Protection Bureau. Operating normally with reliable data, it has provided strong data support for the precise monitoring and governance of environmental protection departments.