Abstract: A shoe sole which enables the Aori movement of a foot to be readily performed is obtained. According to the invention, the shoe sole is formed of a toe portion 10 and a main portion 20. Toe portion 10 has one upper surface F (first upper surface) and one bottom surface portion (first bottom surface portion). Main portion 20 has one upper plane E (second upper plane), and three bottom surface portions B, C and D (second, third and fourth bottom surface portion). The thickness (t2) of a portion on the lateral side of bottom surface portion C of main portion 20 is formed smaller than the thickness (t1) of a portion on the medial side. Bottom plane C (third bottom surface portion) permits a foot to supinate in a natural manner in dorsiflexial position when the third bottom surface portion touches the plane of walking.