Abstract: An apparatus and method for coating electrostatically charged powder on a ring-shaped article having an inner surface defining a central hole. The article to be coated is held by a holding fixture while electrostatic powder is being sprayed onto the surface of the article. The holding fixture includes a first fixture having a plurality of holding hooks circularly arranged and elastically deformable radially, and a second fixture having a rod, the first and second fixtures being inserted through the central hole of the article from opposite sides to engage each other, with the rod engaging the holding hooks to elastically deform the hooks and bring them into abutment with the inner surface of the article. The powder ejected from the spray reach not only the outer surface, but also the internal surface of the ring shaped article because the central hole is not blocked or covered by the holding fixture, and a space is left between the ring shaped article and the end surfaces of the holding fixture.