A printed matter inspection device comprising: a detection section adapted to detect a streak defect that extends in a first direction from a printed matter, from a difference between standard image data and inspection image data obtained by reading the printed matter; an intensity calculation section adapted to calculate a basic streak intensity that is an intensity of the streak defect; characterised by: a streak near-field area specification section adapted to specify a streak near-field area that is continuous from an area of the streak defect of the printed matter, in which a variation of image feature amounts is within a predetermined first range; a streak near-field area information acquisition section adapted to acquire color information and frequency feature information on the streak near-field area; an outer peripheral area specification section adapted to specify an outer peripheral area that is in contact with the streak near-field area; an outer peripheral area information acquisition section adapted to acquire frequency feature information on the outer peripheral area; a visibility determination section adapted to determine visibility of the streak defect on the basis of the basic streak intensity, the color information and the frequency feature information on the streak near-field area, and the frequency feature information on the outer peripheral area; and a determination section adapted to determine whether the quality of the printed matter is good or not at least on the basis of the visibility. a detection section adapted to detect a streak defect that extends in a first direction from a printed matter, from a difference between standard image data and inspection image data obtained by reading the printed matter; an intensity calculation section adapted to calculate a basic streak intensity that is an intensity of the streak defect; characterised by: a streak near-field area specification section adapted to specify a streak near-field area that is continuous from an area of the streak defect of the printed matter, in which a variation of image feature amounts is within a predetermined first range; a streak near-field area information acquisition section adapted to acquire color information and frequency feature information on the streak near-field area; an outer peripheral area specification section adapted to specify an outer peripheral area that is in contact with the streak near-field area; an outer peripheral area information acquisition section adapted to acquire frequency feature information on the outer peripheral area; a visibility determination section adapted to determine visibility of the streak defect on the basis of the basic streak intensity, the color information and the frequency feature information on the streak near-field area, and the frequency feature information on the outer peripheral area; and a determination section adapted to determine whether the quality of the printed matter is good or not at least on the basis of the visibility. a streak near-field area specification section adapted to specify a streak near-field area that is continuous from an area of the streak defect of the printed matter, in which a variation of image feature amounts is within a predetermined first range; a streak near-field area information acquisition section adapted to acquire color information and frequency feature information on the streak near-field area; an outer peripheral area specification section adapted to specify an outer peripheral area that is in contact with the streak near-field area; an outer peripheral area information acquisition section adapted to acquire frequency feature information on the outer peripheral area; a visibility determination section adapted to determine visibility of the streak defect on the basis of the basic streak intensity, the color information and the frequency feature information on the streak near-field area, and the frequency feature information on the outer peripheral area; and a determination section adapted to determine whether the quality of the printed matter is good or not at least on the basis of the visibility.