The ion exchange membrane can be assembled into an electrodialyser for the desalination of brackish water and the concentration of a salt solution. The degree of desalination of the electrodialysis unit can reach the purity of one distilled water. It can also be applied to the desalting of glycerin and polyethylene glycol, separating various ions and radioactive elements, isotopes, and fractionating amino acids. In addition, ion exchange membranes are also used in the purification of organic and inorganic compounds, the treatment of radioactive waste liquids in the atomic energy industry, the preparation of nuclear fuels, and the fuel cell separators and ion selective electrodes. Ion exchange membranes play an important role in the field of membrane technology, and it will also play an important role in the study of biomimetic membranes.