传统乳业食品跟踪追溯系统不能有效地应对三聚氰胺等乳业食品质量安全问题，因而需要研究基于物联网技 术的乳业食品安全跟踪追溯系统。在探讨了物联网技术与乳业食品安全跟踪追溯系统的概念和关系后，着重分析了当前一些 较为重要的跟踪追溯系统，并指出了这些策略的优缺点。最后分析了当前亟待解决的问题，展望了其未来的发展趋势。

Traditional traceability system cannot be applied efficiently to the dairy food safety quality problems. Therefore a new traceability system for solving these problems should be studied. After describing the concepts and characteristics of internet of things and traceability system, this paper analyzes the key mechanisms of the existing representative traceability system，and points out the merits and demerits of them in detail．Finally，it also points out the open research problems．