The invention relates to cutting equipment, in particular to fixed-length cutting equipment for watchband leather of a smart watch. By adoption of the fixed-length cutting equipment for the watchband leather of the smart watch, the effect of length control can be achieved. For achieving the effect, the fixed-length cutting equipment for the watchband leather of the smart watch comprises a left bearing seat, a left nut, a first lead screw, a cutting frame, a connecting block, a second lead screw, a right nut, a right bearing seat, a servo motor, a left electric push rod and the like. A left supporting rod and a right supporting rod are connected to the bottom of the interior of the cutting frame in a bolted mode, and the left supporting rod is arranged at the right side of the right supporting rod. A collection frame is arranged in the middle of the bottom of the interior of the cutting frame. A fixing device is arranged at the top end of the left supporting rod. By adoption of the fixed-length cutting equipment for the watchband leather of the smart watch, the effects of simple structure, ingenious design and convenient fixed-length cutting are achieved; and operation is easy and convenient, and the practicability is high.