A sheet discharge device for discharging a sheet onto a sheet tray on which the sheet is to be placed, comprising: a discharge path along which the sheet is discharged onto the sheet tray; a discharge portion (124, 126) disposed on the discharge path, and configured to discharge the sheet passing along the discharge path onto the sheet tray; and a pressing member (71, 72) disposed on a downstream side of the discharge portion in a sheet discharge direction, at a position corresponding to each of both ends of the sheet in a sheet width direction orthogonal to the sheet discharge direction, the pressing member being shiftable between a hanging posture, in which the pressing member hangs from an axis (73a, 74a) of pivotal movement thereof above the discharge path in such a manner as to block the discharge path, and a retracted posture, in which the pressing member is pivotally moved in the sheet discharge direction about the axis of pivotal movement thereof for opening the discharge path, characterized in that the pressing member has: a side portion (71 b, 72b) protruding into the discharge path when the pressing member is in the hanging posture; and a bottom portion (71 e, 72e) continuing to a lower end of the side portion and extending toward downstream in the sheet discharge direction, and a curved portion (71f, 72f) configured to continuously connect between the bottom portion and the side portion of the pressing member, wherein the bottom portion includes an inclined surface (712e, 722e) inclined upwardly toward a middle part of the sheet in the sheet width direction when the pressing member is in the hanging posture, and the curved portion is configured to be inclined upwardly toward the middle part when the pressing member is in the retracted posture. a discharge path along which the sheet is discharged onto the sheet tray; a discharge portion (124, 126) disposed on the discharge path, and configured to discharge the sheet passing along the discharge path onto the sheet tray; and a pressing member (71, 72) disposed on a downstream side of the discharge portion in a sheet discharge direction, at a position corresponding to each of both ends of the sheet in a sheet width direction orthogonal to the sheet discharge direction, the pressing member being shiftable between a hanging posture, in which the pressing member hangs from an axis (73a, 74a) of pivotal movement thereof above the discharge path in such a manner as to block the discharge path, and a retracted posture, in which the pressing member is pivotally moved in the sheet discharge direction about the axis of pivotal movement thereof for opening the discharge path, characterized in that the pressing member has: a side portion (71 b, 72b) protruding into the discharge path when the pressing member is in the hanging posture; and a bottom portion (71 e, 72e) continuing to a lower end of the side portion and extending toward downstream in the sheet discharge direction, and a curved portion (71f, 72f) configured to continuously connect between the bottom portion and the side portion of the pressing member, a side portion (71 b, 72b) protruding into the discharge path when the pressing member is in the hanging posture; and a bottom portion (71 e, 72e) continuing to a lower end of the side portion and extending toward downstream in the sheet discharge direction, and a curved portion (71f, 72f) configured to continuously connect between the bottom portion and the side portion of the pressing member, wherein the bottom portion includes an inclined surface (712e, 722e) inclined upwardly toward a middle part of the sheet in the sheet width direction when the pressing member is in the hanging posture, and the curved portion is configured to be inclined upwardly toward the middle part when the pressing member is in the retracted posture.