This invention provides an optical information recording medium whose recording thin film is made of three components of GeTe, Sb.sub.2 Te.sub.3 and Sb derived from a GeTe alloy, an Sb.sub.2 Te.sub.3 alloy and excess Sb and which is capable of recording, reproduction and erasure. By this, optical disk files which have a stable cycle characteristic and are practically useful can be realized.