A multilayer film according to the present invention is a multilayer film, in which an outermost layer and an innermost layer are laminated via an intermediate layer arranged from one to three layers, with the intermediate layer including at least one layer being made of 0 to 55 weight % of a linear polyethylene having a density of 0.910 to 0.930 g/cm3, 5 to 15 weight % of a high-density polyethylene having a density of 0.950 to 0.970g/cm3, and 35 to 85 weight % of alinear polyethylene having a density of 0.900 to 0.910g/cm3and polymerized using a single-site catalyst, and having a density lower than the outermost layer and the innermost layer, and each of the outermost layer and the innermost layer being formed of a polyethylene or a mixture of two or more types of polyethylene.本發明之多層薄膜係將最外層與最內層經由以1～3層構成之中間層積層而成者，其特徵在於：上述中間層包含：具有0.910～0.930 g/cm3之密度之直鏈狀聚乙烯0～55重量%，具有0.950～0.970 g/cm3之密度之高密度聚乙烯5～15重量%，及具有0.900～0.910 g/cm3之密度之以單點觸媒聚合而成之直鏈狀聚乙烯35～85重量%；並且至少包含1層密度低於上述最外層及上述最內層之層，上述最外層及上述最內層包含聚乙烯或2種以上聚乙烯之混合物。
