Abstract: During the transportation of bulk grain, it may be transported multiple times by trucks, trains and ships, many times of loading and unloading, changes in transportation methods, changes in the long-distance external environment, will affect the quality of grain. It is difficult to obtain information during the transportation process. Assess the risk of changes in food quality. Existing research work mainly focuses on the business process of grain logistics and information system framework, and does not focus on the actual food logistics business scenarios. This article mainly discusses the quality traceability method in the grain logistics process, builds a grain logistics traceability information system based on the inventory grain identification code, and is dedicated to solving the key issue of quality traceability in the bulk grain in transit logistics process.

Key words: grain circulation, logistics, quality traceability, food traceability, internet of things