<；P>；PROBLEM TO BE SOLVED: To provide a multilayer film which has an improved molding property, has biodegradability and can be used suitably for a compost bag, an agricultural film, a packaging film or the like. <；P>；SOLUTION: The multilayer film comprises: a middle layer with a composition including oxidized starch having such a structure that a part of glucose unit in the starch is cut between C-2 and C-3 and carboxyl groups are formed at C-2 and C-3, and a biodegradable polymer； and an outer layer and inner layer which contain biodegradable resins respectively. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
