The invention discloses a device capable of conveniently removing barks of corners of a timber, which comprises a base, a supporting frame is arranged on the base, a first barking unit is arranged onthe supporting frame, a second barking unit is arranged at one side of the first barking unit, the first barking unit comprises barking cutters, connecting blocks, bolts, a first gear, an extending rod, a channel, a retracting rod, a spring, a second gear, pneumatic cylinders, and rollers, the connecting blocks are connected to the barking cutters through the bolts, the barking cutters, the connecting blocks and the bolts arranged in a plurality of sets are connected into the shape of a ring, and each barking cutter is provided with a notch. Consequently, the device can rapidly remove bark a timber, ensure the quality of rapid barking and prevent the circumstance of uneven barking of both sides from occurring, corners can be mechanically barked, the input of manpower is reduced, moreover,the speed of work is increased, the quality of work is increased, and thereby income is increased. The device is easy to operate, highly practical and convenient to popularize for use.