The invention discloses a power-driven perforating machine. The power-driven perforating machine comprises a travel system and a perforating system; the travel system comprises a rack, the front part of the rack is provided with two drive wheels, and the rear part of the rack is provided with driven wheels; a gearbox is installed on the drive wheels, and connected with the drive wheels through a chain, an engine is installed in the middle of the front part of the rack, and the rear part of the rack is provided with a handle frame; the perforating system comprises a track inclined frame and a perforating device, the track inclined frame is installed in the middle of the rack, sliding ways are arranged at two sides of the track inclined frame and inclined in a manner of high front part and low rear part, the perforating device is installed in the middle of the track inclined frame, and connected with the engine through a transmission flexible shaft so as to drive the perforating device to rotate; the bottom of the track inclined frame is provided with a chain wheel to be connected with the drive wheels through the chain, the chain wheel is used for driving a movable sliding block to horizontally move front and back along a spout, the movable sliding block is used for driving the perforating device to slide up and down along the sliding ways to realize the perforating work. The perforating machine disclosed by the invention has the beneficial effects that the perforating is regular, the row spacing is consistent and tidy, and the power-driven perforating machine is especially suitable for the large-area and large-plot tobacco planting work.