A laundry treatment device includes a cylinder assembly and an electrolysis apparatus, arranged on a water inlet channel provided in the laundry treatment device and communicating with the cylinder assembly, to electrolyze water in the water inlet channel. The electrolysis apparatus comprises: two electrode plates, a cathode conductive connector, and an anode conductive connector. Multiple through holes penetrating the electrode plate in the thickness direction of the electrode plate are formed in the electrode plate. The density of the through holes in the electrode plate is 1-10/cm2. One of the electrode plates is a cathode plate and the other of the electrode plates is an anode plate, the cathode plate and the anode plate being arranged in a stack, and the through holes in the cathode plate and the through holes in the anode plate being arranged to face each other.