从预处理的必要性出发，论述了木质纤维原料的预处理技术，分析了主要预处理技术的特点和处理纤维质原料的效果，并对未来预处理技术的发展方向提出了建议，供从事木质纤维素制乙醇的研究人员参考。

The principle and practice of main pretreatment methods were reviewed starting with an introduction of the necessary of pretreatment of lignocellulosic materials. In the end, the authors brought forward some suggestions for the development of pretreatment techniques for the biethanol production from lignocellulosic materials. It is hoped that this paper would lend some help to the conversion of lignocellulosic materials to the biethanol production.