This paper describes the influence of electrolyzed water dilute NaCl on the surface of industrial pure iron. First, we clarified the etching characteristic of electrolytically-oxidized water and electrolytically-reduced water against the surface of industrial pure iron using HCl solution for comparative immersion experiments. The results show that there is no etching operation on iron produced by electrolytically-reduced water, but electrolytically-oxidized water works well for the etching operation, and if the ORP/pH value of the electrolytically-oxidized water is high, the etching speed becomes correspondingly fast. Next, by the observation of the SEM image, the influence of electrolyzed water on the shape of the industrial pure iron surface became clear. The results indicated that electrolyzed water didn't have a big influence on the surface form of pure iron. Lastly, surface analysis revealed that electrolyzed water had no negative influence on the chemical composition of the industrial pure iron surface. The study indicates that electrolytically-reduced water can be utilized in the washing process, and that electrolytically-oxidized water can be applied to the surface treatment and washing of industrial pure iron.