In order to meet the challenges of refined management of logistics parks and cold chain parks, based on the edge computing architecture, HD cameras and AI all-in-one machines are set up to collect the video data of the main channels and entrances of the park in real time and conduct structural analysis, feature extraction and view storage, so as to realize the post-mortem tracking of passengers, vehicles and goods in the park, which can be accurately queried by name (license plate number, waybill number) Real time locking and path playback of personnel and vehicles to determine risk targets and scope of impact.