Food quality tracking system based on Internet of things is an integrated monitoring and management information system, which consists of intelligent database technology, radio frequency identification technology, food safety technology, multimedia and network technology, wired and wireless network technology, as well as other practical high-tech techniques. The system is an organic combination of food safety detection, full track on qualities of agricultural products, network-based integration and management information platform, with crossover technology fields and practical research results. Considering small amounts of data transfer in the agricultural system and relatively less real-time requirements, the system uses GSM /GPRS public wireless network for remote data transfer. The combination of internet of things technology, GSM / GPRS public wireless network technology and Internet significantly reduces the cost of the system, with leading limitless scope of tracking recognition, which enhances the comprehensive performance of the system greatly.