A sheet conveying device includes a conveyance belt, a conveyance plate, an air intake portion, and a charging portion. The conveyance belt has a plurality of belt openings formed in a previously-set suction attraction region in end portions thereof in a width direction perpendicular to a conveyance direction of a sheet, and conveys the sheet. The conveyance plate has a plurality of platen openings formed therein at positions corresponding to the belt openings in the width direction, and is disposed on a back surface side of the conveyance belt. The air intake portion suctions air through the belt openings and the platen openings from the back surface side of the conveyance plate. The charging portion charges a previously-set electrostatic attraction region in a center portion in the width direction of the conveyance belt.