PURPOSE: To improve the drop resisting strength of the end part side, and also, to make the skin contact property excellent by thickening the blade thickness of a fixed blade in the end part side against the center part for determining the cutting left height, in the hair cutter blade in which the fixed blade is formed by fine ceramics.

CONSTITUTION: Two pieces are positioned in line symmetry against the center shaft of a base plate and with regard to each of them, one end and the other end are hooked and attached to an engaging part provided on the base plate 3, and the engaging part 4a of a guide plate 4 attached to a movable blade 2, respectively. By this attachment, a fixed blade 1, a movable 2 and a holder spring are subjected to blocking, and also, the movable blade 2 is supported so as to be roughly freely reciprocatable against the fixed blade 1. Blade thickness of a first cutting blade 1a is formed so as to be gradually thicker toward the end part 1b side from the center part. Therefore, the outside surface of a first cutting blade 1a of the fixed blade 1 becomes a recessed shape. Consequently, the contact pressure distribution of the fixed blade 1 and, for instance, the head part becomes gentle, and the blade softens the skin contact, and also, comes to easily run along the head.