In most cases children can apply benzalkonium chloride because it is an antiseptic and can effectively prevent and treat bacterial infections in children, for example, children can apply benzalkonium chloride patches. After a child’s skin is traumatized, it often causes local redness, swelling, heat, pain and other symptoms, which can be relieved by applying benzalkonium chloride patch, which not only can play the effect of local pressure to stop bleeding, but also can play the role of anti-inflammatory. In addition, if children suffer from skin infections as well as vulvar skin infections, they can also apply benzalkonium chloride solution for local topical washing to relieve the symptoms of dermatitis.