A method for manufacturing a part made from composite material, wherein the part comprises a body (207, 601, 800) and one or more continuous fibre bundles arranged within said body, wherein the method comprises the stages of: a) obtaining a body that includes one or more tubular cavities (604a-f) in its interior, wherein each tubular cavity of said one or more tubular cavities extends between a first end, disposed on the outer surface of the body and which comprises an inlet orifice, and a second end, opposite to said first end; b) introducing resin in the liquid state and a continuous fibre bundle in the interior of at least one tubular cavity of said one or more tubular cavities through its inlet orifice, such that the input end of the continuous fibre bundle advances towards the second end of said at least one tubular cavity; and c) curing the resin until it solidifies, adhering to the body (207, 601, 800) of the part and fixing the continuous fibre bundle in the interior of said at least one tubular cavity; characterised in that stage b) comprises: - carrying out said introduction of resin in the liquid state and of said continuous fibre bundle simultaneously within said at least one tubular cavity, wherein said introduction of the resin is performed applying a pressure differential on the resin and said introduction of the continuous fibre bundle is performed exerting on the continuous fibre bundle a viscous drag force by means of the resin, or - carrying out said introduction sequentially, first for the continuous fibre bundle and subsequently for the resin in the liquid state, performing said introduction of the continuous fibre bundle within said at least one tubular cavity exerting a dragging force by means of a pressurised fluid along the interior of at least said tubular cavity. a) obtaining a body that includes one or more tubular cavities (604a-f) in its interior, wherein each tubular cavity of said one or more tubular cavities extends between a first end, disposed on the outer surface of the body and which comprises an inlet orifice, and a second end, opposite to said first end; b) introducing resin in the liquid state and a continuous fibre bundle in the interior of at least one tubular cavity of said one or more tubular cavities through its inlet orifice, such that the input end of the continuous fibre bundle advances towards the second end of said at least one tubular cavity; and c) curing the resin until it solidifies, adhering to the body (207, 601, 800) of the part and fixing the continuous fibre bundle in the interior of said at least one tubular cavity; characterised in that stage b) comprises: - carrying out said introduction of resin in the liquid state and of said continuous fibre bundle simultaneously within said at least one tubular cavity, wherein said introduction of the resin is performed applying a pressure differential on the resin and said introduction of the continuous fibre bundle is performed exerting on the continuous fibre bundle a viscous drag force by means of the resin, or - carrying out said introduction sequentially, first for the continuous fibre bundle and subsequently for the resin in the liquid state, performing said introduction of the continuous fibre bundle within said at least one tubular cavity exerting a dragging force by means of a pressurised fluid along the interior of at least said tubular cavity. - carrying out said introduction of resin in the liquid state and of said continuous fibre bundle simultaneously within said at least one tubular cavity, wherein said introduction of the resin is performed applying a pressure differential on the resin and said introduction of the continuous fibre bundle is performed exerting on the continuous fibre bundle a viscous drag force by means of the resin, or - carrying out said introduction sequentially, first for the continuous fibre bundle and subsequently for the resin in the liquid state, performing said introduction of the continuous fibre bundle within said at least one tubular cavity exerting a dragging force by means of a pressurised fluid along the interior of at least said tubular cavity.