目的 综述天然高分子（淀粉、 羧甲基纤维素、 壳聚糖、 海藻酸钠和木质素）与聚乙烯醇（PVA）复合制备可生物降解共混膜的方法及性能的研究进展。方法 分类讨论淀粉、 羧甲基纤维素、 壳聚糖、 海藻酸钠、 木质素分别与 PVA 进行共混制备共混膜的方法及应用。结果 总结了多糖类天然高分子/PVA共混膜的研究与应用进展， 并指出了该类共混膜今后发展的方向。结论 多糖类天然高分子/PVA可生物降解共混膜的研究是目前科研的热点之一， 该共混膜对降低环境污染和节约能源具有重要的意义， 具有广阔的应用前景。

The research progress in preparation and property of the polysaccharide natural polymer/PVA biodegradable blend films using PVA and polysaccharide natural polymers such as starch, carboxymethyl cellulose, chitosan, sodium alginate and lignin as raw materials was reviewed in this paper. In this paper, method and application of blending of starch, carboxymethyl cellulose, chitosan, sodium alginate and lignin respectively with PVA in order to prepare the blend films were discussed. The researches and applications of the polysaccharide natural polymer/PVA biodegradable blend films were summarized. And the future development of the blend films was pointed out. The research of the polysaccharide natural polymer/PVA biodegradable blend films is one of the hot spots in scientific research fields. The blend films have important significance for reducing environmental pollution and saving energy. Therefore, the blend films have broad application prospects in the future.