The present invention provides an image forming apparatus in which sheet containing device containing a sheet is detachably attached to a containing portion provided in an apparatus main body includes: an engagement portion provided on the sheet containing device; drawing device which is provided in the containing portion to be rotatable using one end thereof as a pivot, the drawing device being engaged with the engagement portion and rotating when the sheet containing device is attached to the containing portion and drawing the sheet containing device through the engagement portion by means of a spring when a predetermined rotating position is reached; and a guide device which, when the drawing device rotates to draw the sheet containing device, guides a movement of the engagement portion in a drawing direction, and has such a configuration that the guide device is composed of a linear portion parallel to a direction in which the sheet containing device is inserted; and a curved portion which is provided on the downstream side of the linear portion with respect to a direction in which the sheet containing device is attached, the curved portion being curved not to extend away from the pivot of the drawing device.