A system and method for forming a shoe sole (10) is disclosed. Specifically, there is provided a sole mould for fabricating high-quality shoe soles with great efficiency and a method of using such a mould, wherein the soles feature good air permeability and perfect match with the feet by automatically adapting themselves to the shape of the feet. The sole mould includes a first mould (26) for injection-moulding the underside of a leather layer, and a second mould (28) for injection-moulding the upper surface of the leather layer to form the sole. Further, the first mould is configured in the same shape as the fore sole of the foot and the second mould is configured in the shape of a complete sole.