中文摘要：

综述了近年来天然高分子材料的研究进展。主要介绍纤维素、木质素、淀粉、甲壳素、壳聚糖、其它多糖、蛋白质以及天然橡胶等天然高分子通过化学、物理方法以及纳米技术改性制备具有各种功能及生物可降解性环境友好材料的研究状况，并对此类新材料的应用前景进行了展望。

英文摘要：

This paper reviewed the developments of materials in natural polymers in recent years. Natural polymers, such as cellulose, lignin, starch, chitin, chitosan, other polysaccharides, protein and natural rubber, were modified by chemical or physical methods and nanotechnology to prepare biodegradable eco-friendly materials with various functions, and a number of potential applications for these novel materials were introduced.