The principle of the electrode method for producing sodium hypochlorite is to produce sodium hypochlorite by a homogeneous secondary chemical reaction using a diaphragmless electrolysis. The reaction principle of the anode is to electrolyze sodium chloride (pill) in the swimming pool. During the electrolysis process, sodium hypochlorite is formed. The most suitable salt concentration is 3% to 5%. The electrodes used in the sodium hypochlorite generator are plate electrodes and tubular electrodes.