To provide a high-heel shoe which gives a wearer good feeling as a sneaker by making the grounding face of the sole of an unstable high-heel shoe almost horizontal to improve stability of the high-heel shoe.

This insole of a high-heel shoe is equipped with a hemispheric thick wall part on both side faces between the toe part and the bent part. The hemispheric part of the thick wall part is placed to the center part of the insole to form the diameter part of the hemisphere as a curve matching the side part of the insole. The arc part of the insole is made gradually thinner toward the circumference direction.