A disclosed catch tray for stacking thereon sheets discharged from an apparatus includes a first sheet-stacking area disposed upstream of a sheet discharging direction and having a sloping surface extending upwardly from an upstream side to a downstream side of the sheet discharging direction; a second sheet-stacking area extending from an end of the sloping surface on the downstream side; a first regulation part disposed, within the second sheet-stacking area, on the downstream side of the sheet discharging direction, and configured to regulate edges of the discharged sheets of a largest size allowed to be stacked on the catch tray; and a second regulation part disposed in the first sheet-stacking area, and configured to regulate edges of the discharged sheets of a size smaller than the largest size and elastically deform in the sheet discharging direction when a sheet of the largest size is discharged so as to allow the first regulation part to regulate an edge of the sheet of the largest size.