An image forming apparatus having an image reading unit for reading optically an image on an original document and an image forming unit for forming the image on a recording medium based on image information read with the image reading section includes a mounting member composed of a first mounting member mounting the image forming unit thereon and a second mounting member mounting the image reading unit thereon, formed above the first mounting member and configured as upward and downward movable with respect to the first mounting member, a pushing section for pushing upward the second mounting member, and a level setting section for setting the second member at a prescribed level.