The ultraviolet rays emitted by lotus root can effectively sterilize, but long-term direct exposure to ultraviolet rays will cause harm to eyes and skin, and even more serious lesions will appear. Therefore, ultraviolet disinfection lamps must be used indoors without people. Kindergarten must do the following when equipped with ultraviolet disinfection lights: First, purchase qualified, safe and reliable products, and keep quality guarantee and invoices; Two, the installation of ultraviolet disinfection lamp should meet the safety requirements, maintain a certain height and should be equipped with obvious warning signs. In order to prevent children from turning it on by mistake, it is best to set up an independent circuit, especially to install it separately from ordinary lighting; Third, we should improve the management system, implement the responsibility, ensure that there is a special person in charge of disinfection lamps, and ensure the safe and effective use of equipment; Fourth, attach importance to special safety education, ensure that every faculty member knows the use methods and precautions of disinfection lamps, and incorporate relevant knowledge into the safety education and teaching of young children. Zhang wenyuanlian