To enable even an unskilled haircutter to sharpen a pair of haircutting scissors accurately, quickly and precisely.

Rough sharpening is performed by bringing the edge of a scissors body S into contact with a reciprocating grinding wheel 11 in a direction almost orthogonal to the motion direction of the grinding wheel 11, finish sharpening is performed by bringing the same into contact with the grinding wheel in almost the same direction as its motion direction, and accordingly sharpening time is shortened and sharp cutting is maintained for a long time. A balance device is provided for adjusting the contact weight of the scissors body brought into contact with the grinding wheel 11, rough sharpening is performed strongly, and finish sharpening is performed with light touch, and thus improved sharpening performance and a highly accurate sharpening result are provided. Further, a means is provided for gradually displacing the contact position of a nonlinear edge line, E, and sharpening is carried out uniformly in a edge line direction.