A green fresh grain packaging traceability system comprises a packaging spray code module, a grain information collection and storage module, a grain circulation information storage module, a centralserver and a query client; The packaging spraying module sprays and codes the grain packaging bags; The grain information collecting and storing module scans and retains the code on the grain packaging bag, and collects the information of the grain producing area, variety and processing. The grain circulation information storage module stores and outputs the grain circulation information; the central server receives the information outputted from the grain information collection storage module and the grain circulation information storage module and stores the information of the same coded grain packaging bag. The code on the grain packaging bag is scanned by the query client and uploaded to the central server, and the relevant information of the grain packaging bag with the same code is exported from the central server and displayed. The traceability system of the invention effectively prevents grain intermediaries from adulterating, and creates a high-tech and high-level supervisiontraceability process.