A document feeding device for feeding documents comprises a document input tray on which documents to be fed are placed, a document output tray to which the documents are ejected, and a feeding mechanism which is provided for a feeding path connecting the document input tray and the document output tray via a scanning position and feeds each document from the document input tray to the scanning position and from the scanning position to the document output tray. The document output tray includes a tray part which holds the ejected documents, a projecting part which pushes up a part of the ejected documents on the upstream side in a feeding direction and thereby lifts an upstream end of the ejected documents, and a pressing member which makes contact with the ejected documents from above at a position on the downstream side of the projecting part's apex in the feeding direction.