近年来，知识图谱在食品安全领域中发挥着重要作用。食品安全知识图谱所承载的信息在全生命周期流转过程中存在数据中心化严重、信息流通不畅、数据容易被篡改、溯源效率低下以及难以共享共管等问题。区块链作为新一代信息技术的创新架构，具备泛中心化、分布式处理、隐私性高、数据公开透明、内容不易篡改等特性，为食品安全知识图谱流通与管理提供了新的解决思路。本文首先分析了食品安全知识图谱现状和存在的痛点。然后，综述了区块链在食品安全领域的应用现状。在此基础上，构建一种基于区块链的食品安全知识图谱可信管理框架，并设计了适用于食品安全知识图谱的多模存储模式、融合Raft与TBFT共识算法的R-TBFT共识优化机制和食品安全知识图谱定制化智能合约。最后，通过对本文提出的模式进行可行性和运行流程等分析，表明本模式能够实现全链条上食品安全知识图谱的共享和互通，并保证了数据存储和传输的安全可靠，为企业、监管机构和消费者提供了可信的食品信息来源。本文为新一代信息科学在食品安全领域的创新应用提供了可行的解决方案，并且具有一定的参考价值。

In recent years, knowledge graphs have played an important role in the field of food safety. However, there are several issues with food safety knowledge graph information in the whole-life cycle circulation, such as severe data centralization, poor information circulation, easy data tampering, low traceability efficiency, and sharing and co-management difficulty. As an innovative architecture of the new generation of information technology, blockchain offers a new solution for the circulation and management of food safety knowledge graph with its features of decentralization, distributed processing, high privacy, open and transparent data, and difficult data tampering. This paper first analyzes the current situation and critical problems of food safety knowledge graph. Then, it reviews the application status of blockchain in the field of food safety. Based on this, a trustworthy management framework for food safety knowledge graph based on blockchain is constructed. Meanwhile, it designs a multimodal storage mode suitable for food safety knowledge graph, R-TBFT consensus optimization mechanism combined with Raft and TBFT consensus mechanism, and customized smart contracts for food safety knowledge graph. Finally, through the analysis of the feasibility and operation process of the proposed model, it is shown that this model can realize the sharing and interoperability of food safety knowledge graph along the entire chain. It can also ensure the security and reliability of data storage and transmission, providing a reliable source of food information for enterprises, regulatory authorities, and consumers. In summary, this paper provides a feasible solution and valuable reference for the innovative application of new generation information science in the field of food safety.