目的 概述荧光水凝胶在防伪方面的研究情况，挖掘其作为新型防伪器件的应用潜能。方法 根据引入的荧光发射源类型不同进行分类，依次从制备、功能响应机理、应用3个方面综述荧光水凝胶的研究进展。查阅大量相关的文献，对荧光水凝胶在信息防伪领域的最新进展进行归纳与总结。结果 荧光水凝胶根据引入的荧光发射源不同分为6类:碳点、镧系元素、有机荧光剂、聚集诱导染料、多个发射源和其他类型。通过调节尺寸和颜色的变化，实现加密/解密过程，提高了信息安全级别。结论 荧光水凝胶是一种具有独特刺激响应性的功能材料，在信息安全领域的深入探究具有重大意义。

The work aims to provide the summary of research on fluorescent hydrogels in anti-counterfeiting and explore their potential of being used as a new anti-counterfeiting device. The fluorescent hydrogels were classified based on the different types of fluorescent emission sources and the progress of research was reviewed in three areas:preparation, functional response mechanism, and application. Relevant literature was reviewed to provide an up-to-date overview of the latest progress in information anti-counterfeiting. Fluorescent hydrogels could be classified into 6 categories based on the introduced fluorescent emission sources, namely carbon points, lanthanides, organic fluorescent agents, aggregation-induced dyes, multiple emission sources, and other types. By adjusting the size and color changes, the encryption/decryption process could be achieved, thus enhancing the level of information security. In conclusion, fluorescent hydrogel is a functional material with unique stimulus response, which has great significance in information security.