Abstract: A lubricant-containing polymer-filled rolling bearing comprising a lubricant-containing polymer packed in the space formed by an outer race, an inner race and rolling elements, wherein the lubricant-containing polymer is packed with the interposition of a grease layer having a thickness of from 10 &mgr;m to 1,000 &mgr;m formed at least on the inner peripheral surface of the outer race, the outer peripheral surface of the inner race and the surface of the rolling elements and a lubricant-containing polymer-filled rolling bearing comprising an inner race, an outer race, a plurality of rolling elements provided between the inner race and the outer race, a cage protruding outwardly from the end face of either the inner race or the outer race and retaining the rolling elements, and a lubricant-containing polymer packed in the space formed by the inner race, the outer race, the rolling elements and the cage, wherein the cage is covered with the lubricant-containing polymer.