Electrodeionization (EDI), also known as continuous electrolytic desalination technology, scientifically integrates electrodialysis and ion exchange technologies. Through the selective permeation of anions and cations, and the exchange of ions in water by ion exchange resins, it achieves the directional migration of ions in water under the influence of an electric field.This achieves deep purification and desalination of water, and the hydrogen and hydroxide ions generated by water electrolysis continuously regenerate the packed resin. Therefore, the EDI water production process can continuously produce high-quality ultrapure water without the need for acid or alkali chemical regeneration. It has the advantages of advanced technology, compact structure, and simple operation, and can be widely used in the power, electronics, pharmaceutical, chemical, food, and laboratory fields, representing a green revolution in water treatment technology.