Quality tracing system and method

The invention discloses a quality tracing system and a tracing method. The system comprises an information acquisition module, a data storage system, a data analysis module and a user feedback system,the information acquisition module comprises a server, a switch connected with the server, an automatic labeling machine and a recognition device which are arranged on a granary packaging line, a sensor detection element arranged in a granary, and video monitoring modules installed inside and outside the granary. Compared with the prior art, early warning of grain production, quantity, safety andstorage parameters, etc. can be realized, on the basis of detection data accumulated in each link of a grain storage and transportation supply chain, a food supply chain whole process evidence chainis constructed based on a video trajectory tracking technology in combination with sampling inspection, quick inspection, enterprise self-inspection time and frequency and the size of a food traceability unit, and a food whole