A sheet feeding apparatus including a sheet tray for storing a plurality of sheets of paper, the sheet tray capable of being pulled out in a direction perpendicular to a sheet feed direction, a pair of side regulating members for regulating both lateral surfaces of the sheets, the regulating members being provided over the sheet tray and perpendicular to the sheet feed direction, a vacuum belt to suck a sheet of paper from above and feed the sheets, and a moving mechanism for moving the vacuum belt or one of the regulating members that is provided on a back side in the direction of pulling out the sheet tray in the vertical directions, in such a way that, when the sheet tray is pulled out, the uppermost end of the regulating member provided on the back side is lower than the lowermost surface of the vacuum belt.