Abstract: In order to facilitate acquisition of food information and quality supervision，verify authenticity of food，and ensure food safety，based on Google Zxing two-dimensional code generation and decoding programming interface design，food traceability system was developed.In this system，presentation layer，business layer，control layer and data persistence layer component were designed using micro service framework and MVC hierarchical thinking，which could effectively improve reusability，maintainability and efficiency of system.The system architecture，function modules and key technologies were introduced in detail.In order to prevent forgery of two-dimensional code，the AES and RSA hybrid encryption algorithm was used to ensure security and reliability of food traceability system.