The invention relates to a method for manufacturing an orthopaedic insole and to the product thus obtained, the method comprising； a first step (1) of 3D-modelling a future insole with a specific shape and which will ideally be formed by a soft surface (10) and a rigid surface (11)； a second step (2) of software processing for the "flattening" or modelling of the original soft upper part (10), transforming same into an obtained soft surface element (10a), the lower surface thereof being completely flat but the relative thicknesses being maintained； a third step (3) of manufacturing the soft surface (10a) obtained in the second step (2), using milling or additive manufacturing techniques； and a fourth step (4) of joining the obtained soft surface (10a) to the rigid surface (11), obtaining a sandwich-type insole.
