Some problems in disposal of the photographic processing wastes were reviewed. After describing the indication of water pollution and several laws limiting the industrial wastes for the cleaner environment, the specific problems in disposing the photographic processing solutions were pointed out. Regeneration of color developer by removing bromide with ion ion-exchange method and with electrodialysis using ion-exchange membranes, regeneration of spent photographic fixing bath with electrolytic method and ion-exchange method, regeneration of ferricyanide bleach by persulfate-oxidation and ozone-oxidation, and the method of reverse osmosis of the washing water to collect the salt and to reuse the separated water, were generally remarked.