the kation & anion generator is increase thelow voltage to positive high voltage and negative high voltage with voltage increasing circuit, generate large amount of positive ion and negative ion with positive high voltage and negative high voltage ionized air (mainly oxygen), the quantity of negative ion is more than positive ion (1.5 times of positive ion). Thepositive ion and negative ion can generate enormous energy when neutralize with positive negative electric charge, which may change the structure of bacteria or convert the energy and kill bacteria, thus achieving the effect of sterilizing.