The invention provides a sheet conveying apparatus, a method for detaching a rotation member unit from the sheet conveying apparatus, and an image forming apparatus provided with the sheet conveying apparatus. The sheet conveying apparatus includes a rotation member unit, a supporting shaft, and a moving shaft to detach the rotation member unit supported by the supporting shaft and the moving shaft. The rotation member unit includes a conveyance rotation member to convey a sheet, and a holding member including an engaging portion to engage with an engaged portion provided to a sheet conveyingapparatus main body in a direction perpendicular to the supporting shaft axial direction. The supporting shaft supports one end side of the rotation member unit in the axial direction and the moving shaft supports another end side of the rotation member unit in the axial direction and moves in the axial direction. When the engaging portion engages with the engaged portion when the rotation memberunit is not supported by the supporting shaft and the moving shaft, the rotation member unit is held by the engaged portion.