A sheet-type media stacking device, comprising: a piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) configured to convey sheet-type media piece by piece; an upper conveyor belt, arranged around a driving transmission shaft and a driven transmission shaft which are arranged in a conveying direction of the sheet-type media, configured to provide a driving force to the sheet-type media; an arc-shaped stacking plate configured to support the sheet-type media, wherein an arc-shaped surface, fitting closely to the upper conveyor belt, of the arc-shaped stacking plate defines a conveying passage for the sheet-type media, a length of the conveying passage is at least greater than a length of one sheet of the sheet-type medium in the conveying direction, and one end of the conveying passage abuts the piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) and is slightly lower than a delivering outlet of the conveying mechanism (102, 103, 104, 105), and another end of the conveying passage forms an outlet for a whole stack of sheet-type media; a movable blocking mechanism arranged on a section of the conveying passage close to the outlet and configured to selectively block the sheet-type media; a sensor device arranged at a tail end of the delivering outlet of the piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) and configured to detect the arrival and passing of a sheet of the sheet-type medium; and a control unit configured to control the upper conveyor belt to move or stop moving according to information feedback from the sensor device; characterized in that, an acanthus-shaped protruding rib is arranged at a position, at a distance of a length of one sheet of the sheet-type medium from the movable blocking mechanism, on the arc-shaped surface of the arc-shaped stacking plate, and the acanthus-shaped protruding rib allows the sheet-type media to pass only in a discharging direction. a piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) configured to convey sheet-type media piece by piece; an upper conveyor belt, arranged around a driving transmission shaft and a driven transmission shaft which are arranged in a conveying direction of the sheet-type media, configured to provide a driving force to the sheet-type media; an arc-shaped stacking plate configured to support the sheet-type media, wherein an arc-shaped surface, fitting closely to the upper conveyor belt, of the arc-shaped stacking plate defines a conveying passage for the sheet-type media, a length of the conveying passage is at least greater than a length of one sheet of the sheet-type medium in the conveying direction, and one end of the conveying passage abuts the piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) and is slightly lower than a delivering outlet of the conveying mechanism (102, 103, 104, 105), and another end of the conveying passage forms an outlet for a whole stack of sheet-type media; a movable blocking mechanism arranged on a section of the conveying passage close to the outlet and configured to selectively block the sheet-type media; a sensor device arranged at a tail end of the delivering outlet of the piece-by-piece sheet-type media conveying mechanism (102, 103, 104, 105) and configured to detect the arrival and passing of a sheet of the sheet-type medium; and a control unit configured to control the upper conveyor belt to move or stop moving according to information feedback from the sensor device; characterized in that, an acanthus-shaped protruding rib is arranged at a position, at a distance of a length of one sheet of the sheet-type medium from the movable blocking mechanism, on the arc-shaped surface of the arc-shaped stacking plate, and the acanthus-shaped protruding rib allows the sheet-type media to pass only in a discharging direction.