The invention discloses a manufacturing method for a loudspeaker reinforcing part, and the method comprises the steps: 1, providing a material belt and a double-side glue film, wherein the double-side glue film is pasted on the material belt; 2, carrying out avoiding cutting of the double-side glue film and the material belt, and removing the cut double-side glue film and material belt, so as to form a plurality of avoiding holes on the double-side glue film and the material belt; 3, pasting a reinforcing material plate on the double-side glue film; 4, cutting the shape of the double-side glue film and the shape of the reinforcing material plate at the periphery of the avoiding holes according to the positions of the avoiding holes, so as to forming a plurality of reinforcing parts on the reinforcing material plate and the double-side glue film through cutting. The method takes the material belt as the carrier, and can achieve the overall positioning and machining of the double-side glue film and the reinforcing material plate. Each reinforcing part obtained through machining comprises a reinforcing layer and a glue layer, and is pasted on the material belt through the glue layer, thereby facilitating the subsequent transportation and machining.