In recent years, more and more attention has been given to the safety of agricultural products, whose demands for the traceability system are increasingly urgent. This paper, in response to the demands, by using the C# programming language, database technology, IOT technology and RFID technology, realized the traceability system of agricultural products, and explained the implementation of network technology and RFID technology in detail. The traceability system can complete the functions of data collection, early warning, control and data automatic input & management during the production process. This system can well solve the problem of data entry in the farming operation, timely and effectively record the information involved in the production of agricultural products, which can ensure the authenticity of the data in the traceability system.