The invention discloses an equidistant cutting device. The equidistant cutting device comprises a work support, a conveying assembly arranged on the work support, a supply assembly arranged on the feed side of the conveying assembly and a cutting assembly arranged on the discharge side of the conveying assembly; the conveying assembly comprises a stepping motor fixedly arranged on the work support, an upper conveying roller, a lower conveying roller and a transmission structure, wherein the upper conveying roller and the lower conveying roller are arranged in the vertical direction, and the transmission structure enables the stepping motor to drive the upper conveying roller and the lower conveying roller to rotate; the cutting assembly comprises a cutter fixedly arranged on the work support, a first clamping mechanism clamping material is arranged on the feed side of the cutter, and a second clamping mechanism driving the material to move towards the cutter is arranged on the discharge side of the cutter; the stepping motor and the second clamping mechanism are connected to a control assembly. Through mutual rotation of the upper conveying roller and the lower conveying roller, the material is driven to penetrate through the part between the upper conveying roller and the lower conveying roller, the control assembly accurately controls the rotation angle of the stepping motor, the speed of conveying the material by the upper conveying roller and the lower conveying roller is adjusted, and the length error of the material cut each time is reduced.