Ifoods chain builds a safe, trustworthy and shared distributed food safety and quality inspection public chain based on blockchain technology, providing consumers with the means to quickly detect food safety and quality data. Protect the interests of consumers, inspectors and inspection experts through smart contracts; empower consumers with the ability to quickly detect food safety and quality through food inspection smart devices and DAI technology; through incentive mechanisms and blockchain sharing technical features, attract multiple parties to participate in the ecology; through Blockchain storage and distributed storage ensure the security and query of transaction information; through the development of a series of DAPP and smart devices, various distributed applications in the field of food quality and safety technology are realized.