A sheet-conveying device designed to feed a sheet fed thereto through a fixing device toward a discharge unit includes first and second conveyance guides facing each other so as to define a sheet conveyance path and each having a conveying member designed to feed the sheet. The first conveyance guide includes a blower opening facing the sheet conveyance path for blowing air onto the sheet conveyance path, an exhaust opening provided on a downstream side in a sheet feeding direction with respect to the blower opening for removing air that has been blown onto the sheet conveyance path and discharging it outside the device.