A method of producing strong oxidized ionized water by using continuous-typed three-cell electrodialysis stack wasinvestigated, and was compared with the bath typed three-cell electrodialysis stack which need mixing and producingdiscontinuously. The experimental results indicated that it is practical to control the stability of the electric current by using flowingtyped three-cell electrodialysis stack. The analysis of the mechanism of three-cell of flowing typed electrodialysis stack andqualitatively analysical experiments indicated that this typed equipment can be used to produce strong oxidized water steadily,continuouly and with stable quality.