目的 介绍纳米纤维素在包装中的应用与国内外的研究现状，阐述纳米纤维素在改善包装材料气体阻隔性能方面的作用机理、作用方式及作用效果，并对纳米纤维素在气体包装材料领域中的应用前景进行展望。方法 归纳整理国内外文献，简单介绍纳米纤维素的基本性能和制备，以及纳米纤维素复合材料的制备方法，并重点整理分析纳米纤维素复合材料在阻隔包装材料领域的应用与进展。结果 纳米纤维素具有来源广泛、可降解、可再生以及高结晶度等优良特性，在包装材料中加入纳米纤维素可以显著提高包装材料的气体阻隔性能。结论 随着对纳米纤维素研究的不断深入，纳米纤维素在气体阻隔包装材料中的应用会越来越广泛。

The work aims to introduce the application of nanocellulose in packaging and current research status in the world. It focuses on the mechanism, mode of action and effect of nanocellulose in improving the gas barrier properties of packaging materials, and prospects for application of nanocellulose in packaging materials. The literatures at home and abroad were summarized. The basic properties and preparation of nanocellulose and the preparation of nanocellulose composites were briefly introduced. The application and progress of nanocellulose composites in the field of gas barrier packaging material were sorted out and analyzed emphatically. Nanocellulose can be prepared from various resources, and it has several excellent properties such as biodegradability reproducibility and high crystallinity. Incorporation of nanocellulose into the packaging materials can significantly improve the barrier properties. With the constant deepening of researches on nanocellulose, the application of nanocellulose in gas barrier packaging material would be more extensive.