The present invention provides a process for producing a laminated optical film with which it is possible to effectively prevent an adhesive agent from leaking from the edges of a film. A process forproducing a laminated optical film having at least two sheets of laminated film that includes a first surface film and a second surface film, wherein the process for producing a laminated optical filmincludes the steps of: an attaching step for passing a film laminate between a pair of rollers and applying pressure to the film laminate, the film laminate having the first surface film that constitutes part of one surface, the second surface film that constitutes part of another surface, and an adhesive agent layer provided between the first surface film and the second surface film; and a suction step for suctioning excess adhesive agent that moves in the direction of both widthwise ends of the film laminate due to the pressure.