Provided is an optical recording medium which will not lower a signal characteristic without degrading mechanical property or storage stability even after the medium is left under a high temperature and a high humidity. The optical recording medium performs recording/reproduction by a blue laser. When the medium is left under a temperature of 80 degrees C and a relative humidity 80% for 500 hours, the value obtained by the ratio of [error rate after the environment resistant test]/[error rate before the environment resistant test] is 10 or less.