The present invention discloses a parallel connected power supply cabinet system which comprises a plurality of power supply cabinets electrically parallel connected. The power supply cabinet comprises a frame with a plurality of installation chambers formed from the top of the frame downwardly to the bottom of the same. A power distribution unit is installed in one of the installation chambers near the top of the frame. A plurality of power supply units installed in the rest of the chambers respectively. The power distribution unit controls the input power of the power supply cabinet.