A contact lens cleaner and a method for protein removal and sterilization by electrophoresis dissociation are disclosed. The contact lens cleaner comprises a lens cleaning tank (10), two electrophoresis dissociation probes (20) are arranged in the lens cleaning tank (10) opposite each other, and the electrophoresis dissociation probes (20) are electrically connected to a circuit power supply. The lens cleaning tank (10) is filled with an electrolyte solution; a lens to be cleaned is placed in the lens cleaning tank (10); and a switch is turned on, and the two electrophoresis dissociation probes (20) in the lens cleaning tank (10) form an anode and a cathode. There are lacrimal proteins on the surface of the lens to be cleaned, the lacrimal proteins are charged in the solution, and the charged lacrimal proteins move to the electrode opposite to the electrical property thereof in the cleaning tank (10) according to the phenomenon of electrophoresis. The electrolyte solution reacts chemically in the cleaning tank (10) to produce hypochlorite having a strong oxidizing property, and the hypochlorite can degrade the lacrimal proteins, and also can sterilize and disinfect.