PURPOSE: To obtain an economical optical recording medium which provides good long-period conservation and evidence and has high efficiency of utilization by forming the 1st recording area made of recording material which allows the plural-time erasure and rewriting of information and the 2nd recording area made of recording material which disallows the erasure and rewriting on the same substrate.

CONSTITUTION: A reflecting film layer 42 of Al, etc., with a high coefficient of reflection and the recording layer 410 consisting of an amorphous alloy film which is made of a rare earth element such as Gd, Tb, Dy, and Ho and transition metal such as Fe and Co and has an easy magnetization axis at right angles to the film surface are laminated on the substrate 406 in the 1st recording area. A recording film 411 made of Te or Bi itself, their compounds of C, As, Sb, O, etc., or mixture, etc., is formed directly on the substrate 406 in the 2nd recording area. The 1st recording area 410 is used as a temporary storage area for a program to be debugged or data to be processed as a working area, and the 2nd recording area 411 is used as a long-period storage area for a program after debugging or information after statistical processing.