To provide a feeding device sufficiently having both high feeding performance and low cost, and an image forming device having it.

Typical structures of the sheet feeding device and the image forming device comprise an oscillatable intermediate plate for loading and supporting a plurality of sheets, a feeding means for feeding the loaded sheets, an energizing member for energizing the intermediate plate toward the feeding means, and an intermediate plate controlling means for moving the intermediate plate to switch between abutting and separating of the feeding means for the upper surface of the loaded sheets. The intermediate plate controlling means comprises a locking means for holding the intermediate plate in a separating state of the upper surface of the sheets from the feeding means, a releasing means for releasing the holding of the intermediate plate by the locking means, and a separating means for moving the intermediate plate in the separating direction from the feeding means by a predetermined distance.