System for the automatic transport and stocking of products for making up orders therefor, the said system comprising a stocking station for the said products comprising individual bearers able to be supplied with products stocked therein awaiting picking to make up said order, characterized in that the stocking station further comprises: - a space enclosing a plurality of transport and stocking modules each one comprising at least two independent conveyors capable of transporting, automatically and independently of one another, the said bearers, the said conveyors, which each form a closed-loop transport and stocking circuit, extending in a horizontal or substantially horizontal plane, being superposed one above the other, - a plurality of access openings made in said space to allow an operator to access the bearers, from outside the space, so as to supply them with products and/or pick products stocked therein, - a plurality of doors and/or a plurality of windows allowing each access opening to be closed, each door or window defining a stocking and/or picking station (5, 6), - management and control means essentially intended to command and control each module and, where appropriate, to automatically open or close each door, characterized in that: - the modules extend in the space parallel or substantially parallel next to one another, - each module is elongate or rectilinear, extending between two opposite ends, of which one end is formed by one of the said stations intended essentially for supplying the bearers with products, and where appropriate for picking products therefrom, and the other end is formed by the other or one of the other stations intended essentially for picking stocked products from the bearers and, where appropriate, supplying same with products. - a space enclosing a plurality of transport and stocking modules each one comprising at least two independent conveyors capable of transporting, automatically and independently of one another, the said bearers, the said conveyors, which each form a closed-loop transport and stocking circuit, extending in a horizontal or substantially horizontal plane, being superposed one above the other, - a plurality of access openings made in said space to allow an operator to access the bearers, from outside the space, so as to supply them with products and/or pick products stocked therein, - a plurality of doors and/or a plurality of windows allowing each access opening to be closed, each door or window defining a stocking and/or picking station (5, 6), - management and control means essentially intended to command and control each module and, where appropriate, to automatically open or close each door, - the modules extend in the space parallel or substantially parallel next to one another, - each module is elongate or rectilinear, extending between two opposite ends, of which one end is formed by one of the said stations intended essentially for supplying the bearers with products, and where appropriate for picking products therefrom, and the other end is formed by the other or one of the other stations intended essentially for picking stocked products from the bearers and, where appropriate, supplying same with products.