目的 研究光学系统领域内用于监测水果、蔬菜、肉类等食品新鲜度的可视化智能包装技术手段，掌握相关原理，从而减少食物浪费。方法 简述智能包装技术的概念和特点，阐明智能包装指示食物新鲜度的现状，根据食物不同特点，对几种不同指示新鲜度的应用进行阐述。结果 智能包装的应用便于食品质量检测，可实现产品的可追溯性，大大提高了包装的智能性和信息性，促进了食品安全检测系统的发展。结论 智能包装有助于消费者对食物可食性的判断，从而减少食源性疾病的发生和食物的浪费。智能包装在国内的发展仅处于起步阶段，需要国家的大力支持以及包装科研者的不懈努力，才能促进智能包装在食品领域更好地发展。

The work aims to study the visual intelligent packaging technology and means in the field of optical system for monitoring the freshness of fruits, vegetables and meat, and master relevant principles to reduce food waste. Concept and characteristics of intelligent packaging technology were briefly introduced. The present situation of food freshness indicated by intelligent packaging was clarified. The application of several different indicators of freshness was described according to different characteristics of food. The application of intelligent packaging was convenient for food quality detection. With the intelligent packaging, the products could be traced, which greatly improved the packaging intelligence and information and promoted the development of food safety detection system. Consumers can easily judge the food availability and thus reduce the occurrence of foodborne diseases and food waste according to the intelligent packaging. The development of intelligent packaging in China is only at the initial stage. It needs the strong support of the country and the untiring efforts of packaging researchers to promote the better development of intelligent packaging in the food field.