Abstract: In order to study the application of natural biodegradable materials in agricultural field, the author reviewed the literatures at home and aboard in last 20 years about some kinds of natural biodegradable materials including amylum, polylactide, cellulose, lignin, silk fibroin, collagen, chitosan and chitin which were derived from agricultural field. It was found that: the natural biodegradable materials had been applied widely in agricultural field, such as soil improvement, soil and water conservation, diseases and pest control, food fresh and anticorrosive, food and feed additives, bio-fertilizers and so on. However, there were insufficient researches on characteristic of natural biodegradable materials and their optimal design and improvement. In the future, it is needed to improve the characteristic of natural biodegradable materials and broaden the range of their application in agricultural field.