Herpes zoster is a viral infection that involves a single area of skin and is caused by the activation of varicella-zoster virus that invades the epidermis early and later latently in the spinal ganglia. Age, exertion, emotional stress, and decreased resistance can activate the virus, and the activated virus travels down through the sensory nerves to the skin to cause infection. Herpes zoster contains virus in the herpes fluid, and when the herpes ruptures, the virus inside can be transmitted through the respiratory tract to susceptible people with low resistance, such as children. Therefore, it is important to avoid rupture of the herpes and to keep it away from susceptible people. If rupture has already occurred, gauze can be covered over it and topical iodophor or povidone-iodine solution can be applied topically to remove the plasma and scabs as prescribed by the doctor to prevent secondary infection. Vaccination is not necessary, but it is true that the incidence of herpes zoster after vaccination may be lower than the natural infection rate, and the choice is recommended after consultation with a physician.