Abstract: Cellulose，a sustainable development of renewable resources，is abundant in nature. The application of modified cellulose is of great significance to ease the future energy and environmental stress. This paper reviews recent progress in cellulose modification，especially in chemical modification of cellulose derivatives. Cellulose pretreatment is often the first step in cellulose modification，including physical and chemical method etc. Modified cellulose materials include cellulose esters，cellulose ethers，and grafted copolymers. Biological modification of cellulose is mainly used in paper-making industry to treat pulp using cellulose and hemi-cellulose enzymes. Modification of bacterial cellulose includes bio-modification during fermentation and chemical modification after purification. Finally，prospects for modified cellulose application is discussed.

摘要： 综述了近年来纤维素改性的进展情况。纤维素预处理往往是纤维素改性的第一步，包括物理化学等方法。纤维素改性物主要包括纤维素酯类、醚类及接枝共聚物，介绍了近年来其化学改性的方法进展。纤维素的生物改性主要应用于造纸行业，利用纤维素酶、半纤维素酶等处理纸浆。细菌纤维素的改性方法包括细菌发酵时的生物改性及纤维素提纯之后的化学改性。最后展望了纤维素改性的应用前景。