The barrier film manufactured by the method of the. present application can be effectively used in various applications, such as, for example, a packaging material for, a, food or a medical medicine, LCD(Liquid Crystal Display), FPD(Flat Panel Display) a substrate for, a solar OLED(Organic Light Emitting Diode) cell, a substrate for a solar cell, a substrate. for a solar cell, a sealing film, or the like.