中文摘要：

综述了近年来国内外关于生物可降解材料聚乳酸（PLA）通过共聚、共混、增塑和复合等方法得到聚乳酸改性材料的研究进展，以及对其在生物医学领域、纺织领域和包装领域中的应用作了广泛而深入的总结和评述，并预示了聚乳酸材料的研究开发前景。

英文摘要：

Recent research achievements of the biodegradable poly（lactic acid）（PEA） using copolymerization,blend, plasticization, composite, et al, have been reviewed in this article. The wide application in the field of biomedicine, textile, packaging were described in details. The paper also provided a prospect for the recent trend of PLA.