Abstract: This review starts with a brief introduction to the structural characteristics of xyaln and its reactivity，then the chemical modifications，the application fields as well as the development trend about its derivatives are discussed. The chemical modifications of xylan include etherization，esterification，oxidation，cross linking and composite preparation. Different types of xylan derivatives are introduced in such aspects as typical synthesis routes，efficient structure characterization，unconventional xylan derivatives，physicochemical properties，biological activity，structure-property relationships and so on. Besides，functionalized modifications of xylan such as the preparation of micro and nanoparticles as well as xylan-coated magnetite microparticles are also described. New application areas and future research directions are discussed also.

摘要： 在简要介绍木聚糖的结构特点及反应性的基础上，对木聚糖的醚化、酯化、氧化、交联、复合等化学修饰及其衍生物的合成研究现状、应用领域及发展趋势进行了重点评述。从合成路线、特征结构、非常规木聚糖衍生物、物理化学性质、生物活性、构效关系等方面依次对不同类型的修饰产物即木聚糖衍生物进行了分类介绍。此外，还简要叙述了木聚糖的功能化修饰如木聚糖微粒子和纳米粒子、聚合物磁性粒子的制备原理与工艺进展。指出了木聚糖及其衍生物在新领域的应用和今后的研究方向。