The invention discloses a high-voltage centrally-installed switchgear with an automatically-controlled drawing-out unit part. The high-voltage centrally-installed switchgear comprises a cabinet body, wherein a bottom plate is arranged inside the cabinet body and is used for placing a drawing-out unit, a cabinet door is further arranged outside the cabinet body, first power-driven telescopic rods are separately and movably arranged at the two inner sides of the cabinet body, an output end of each first power-driven telescopic rod is movably connected with one side of the cabinet door, a sliding rail is arranged at each of the two sides of the bottom plate, four corners at the lower part of the drawing-out unit are separately and movably connected with the sliding rails at the two sides of the bottom plates through a group of sliding blocks, a connection block is further arranged at the middle position of the lower part of the drawing-out unit, a second power-driven telescopic rod is arranged on the inner wall of the cabinet body at the lower rear part of the drawing-out unit, and an output end of the second power-driven telescopic rod is connected with the connection block under the drawing-out unit. The centrally-installed switchgear can be automatically drawn out, the drawing-out unit also can be supported without any external support element, and the repair work of a maintainer is greatly facilitated.