摘要：【中文】本发明涉及塑料袋领域，更具体地，本发明涉及一种可降解保鲜袋及其制备方法。本发明第一个方面提供了一种可降解保鲜袋，按重量份计，其制备原料包括30～45份聚烯烃、10～15份生物降解料、2～5份偶联剂、1～5份成膜剂、10～20份无机填料、3～9份巯基修饰的多糖。本发明提供的可降解保鲜袋降解迅速，100天后就能降解至5级，安全、环保；保鲜效果好，远远优于普通保鲜袋。 【EN】The invention relates to the field of plastic bags, in particular to a degradable freshness protection package and a preparation method thereof. The invention provides a degradable freshness protection package, which is prepared from the following raw materials, by weight, 30-45 parts of polyolefin, 10-15 parts of biodegradable material, 2-5 parts of coupling agent, 1-5 parts of film forming agent, 10-20 parts of inorganic filler and 3-9 parts of sulfhydryl-modified polysaccharide. The degradable freshness protection package provided by the invention is rapidly degraded, can be degraded to grade 5 after 100 days, and is safe and environment-friendly; the fresh-keeping effect is good and far superior to that of the common fresh-keeping bag.