The present invention relates a sheet feeding apparatus with a lifting and lowering mechanism in a sheet deck 2, which includes abutting portions 101a to 101d which makes wire hanging portions 64a to 64d of a sheet stacking table 52 abut thereon and makes the sheet stacking table 52 lockable with respect to a storing portion 61. The mechanism also includes a pulse motor 27 and a one-way clutch 40. A controller 5 drives the pulse motor 27 to be rotated in a lifting direction of the sheet stacking table 52, further drives the pulse motor 27 to be rotated in the same direction even after the wire hanging portions 64a to 64d abut on the abutting portions 101a to 101d to cause the pulse motor 27 to step out, and renders the pulse motor 27 non-conductive. Thus, the wire hanging portions is locked to abut on the abutting portions.