A sole interlayer of the shoe includes a sole interlayer element which comprises a roof plate, a baseboard, and a plurality of supporting pieces which are arranged between the roof plate and the baseboard and are used for supporting the roof plate to keep away from the baseboard for a distance. The adjacent supporting piece is provided with C-shaped cross section facing to the same direction. Thesole interlayer component further includes a heel cranny to increase the flexibility of the sole. In the optimized embodiment the supporting piece at the inner side is arranged to generate an angle with the supporting piece at the outside of the sole. The direction designing respectively provides aeolotropic flexibility and rigidity to the long direction and transverse direction of the sole.