Provided are a highly flat laminated film having an optically functional layer such as a quantum dot layer, in which a member such as a quantum dot performing an optical function can be prevented from deteriorating due to the permeation of oxygen or the like from an end face, and a method for manufacturing a laminated film. The laminated film includes a functional layer laminate having an optically functional layer and a gas barrier layer laminated on at least one main surface of the optically functional layer and an end face sealing layer formed by covering at least a portion of the end face of the functional layer laminate, and the end face sealing layer has an oxygen permeability of equal to or lower than 10 cc/(m2·day·atm).