To provide a power switching device and a power feeding system with the power switching device that can safely switch AC power and DC power without causing equipment damage and attain miniaturization and cost reduction.

A power switching device includes: an AC power source input section 11 that receives AC power; an AC power switching section 12 that selectively feeds the AC power fed to the AC power source input section 11 to a first AC power feed path 18 or a second AC power feed path 19; an AC power output section 13 that outputs the AC power fed to the first AC power feed path 18; a DC power source input section 14 that receives DC power based on the AC power output from the AC power output section 13; a power source selection section 15 that selects the AC power fed to the second AC power feed path 19 or the DC power fed to the DC power source input section 14; and a power feed section 16 that feeds the power selected by the power selection section 15.