To enable a swelling or protruding part of a pubic bone region in a human body's crotch area to be corrected by a compression force by a pneumatic pressure by normally wearing like undergarment shorts.

A pubic bone correcting implement includes a belt section 2 wound on a human body abdominal part, and a crotch part 3 from a front side of the belt section 2 to a rear side of the belt section 2 via the pubic bone region A in the area between the thighs of the body, an anal region B, and a coccygeal region C. The implement also includes a correcting air bag 4A connected to a portable air pump 6 which can be carried by pressing the public bone region A by the air pressure. The implement also includes a hole part 7 opened or closed by a slide fastener 7A which can protrude a penis part D of the body to an outside of the crotch part 3 from the pubic bone region A of the crotch part 3 to the coccygeal region C. A clamping means 8 which becomes connectable 2 while the length of the belt section 2 is regulated at opposed superposed parts cut at a midway of the belt section 2, is attached to the belt section 2.