Disclosed herein is a pedal equipped with a displacement detecting sensor using like magnetic poles. The pedal includes a pedal unit, a shock-absorbing unit, a sensor inserting unit, a rod unit, and a sensing unit. The pedal unit includes a support plate, an actuating pedal coupled to the support plate, a shock-absorbing hinge, and a coupling hinge. The shock-absorbing unit includes a shock-absorbing mounting part, support shafts provided in shock-absorbing cylinders, and shock-absorbing springs. The sensor inserting unit includes an insertion housing in a center of the shock-absorbing unit, an upper permanent magnet seated in an upper support seat, a lower permanent magnet seated in a lower support seat, and a sensor support. The rod unit includes a rod mounting part having a rod mounting hole, and cylindrical insertion rods. The sensing unit includes a sensor housing at a center in the rod unit, and a displacement sensor.