The present invention provides an optical recording medium comprising a transparent first substrate and a first dielectric layer, a recording layer, a second dielectric layer and a reflective layer which are laminated on the first substrate in this order, wherein the recording layer comprises a thin layer comprising mainly an alloy represented by the composition formula: GexSbyTez (wherein x, y and z represent respectively an atomic %, and x, y and z satisfy respectively the following equations: 3.5 <= x <= 10, 70 <= y <= 80 and z = 100 - x - y) and the second dielectric layer comprises a thin film of a compound oxide comprising at least one of a mixture of Nb2O5 and ZrO2, a mixture of Nb2O5 and ZnO and a mixture of Nb2O5, ZrO2 and ZnO. |