The disclosure provides a surface gradient scattering type clad optical power stripper manufacturing device and method. The manufacturing device comprises a reaction tube, a holder, an injection holeand a flow meter; the bottom of the reaction tube is provided with a connecting hole, and a fiber to be corroded passes through the connecting hole and is hermetically connected with the bottom of thereaction tube; the fiber to be corroded is connected to the holder; the injection hole is formed in the reaction tube; a container containing a corrosive liquid is connected to the injection hole through a pipeline, the corrosive liquid is injected into the reaction tube, and the flow meter is further arranged on the pipeline. According to the gradient corrosion device, the corrosion time for a clad surface continuously increases in the axial direction of the fiber to be corroded and in the laser transmission direction, and the density of crystal particles corresponding to the clad surface gradually increases, thereby achieving the effect of gradually increasing the clad light scattering rate.