In an optical recording medium processing method, a recording layer wherein the information of an optical recording medium having at least a layer for recording the information is recorded by utilizing holography is irradiated with processing light passed through a light diffusion member having a cloudiness value of 70-100%. Equipment for processing an optical recording medium comprises an optical recording medium having at least a recording layer for recording the information by utilizing holography; a processing light source; and a light diffusion member having a cloudiness value of 70-100% interposed between the processing light source and the optical recording medium. The equipment irradiates the recording layer wherein the information is recorded with processing light passed trough the light diffusion member. Preferably, the half peak value of wavelength to the energy intensity of processing light is 5-700 nm, and the optical recording medium is write once (WORM) type.