Provided is a developer supply roller for which undeveloped developer can easily be removed, and with which a sufficient amount of developer can be supplied quickly with good responsiveness; also provided is a method for manufacturing this developer supply roller. This developer supply roller, which is for an image formation device and the surface of which is a polymer foam material, is characterized by having a surface roughness of no less than 60 μm but less than 140 μm, where the surface roughness is defined as the standard deviation of the displacement of all measurement points from a reference line, when the measurement length is 40 mm, the measurement interval is 1 mm, and there are 40 measurement points.