Ultraviolet light kills novel coronaviruses. Novel coronaviruses are highly toxic and infectious, but are more sensitive to UV light and heat. After UV disinfection for more than 30 minutes, it can kill the novel coronavirus, but it needs to be sterilized by a regular UV lamp, so it is recommended to always have a UV lamp at home. UV sterilization mainly acts on nucleic acids to inactivate the proteins among the viruses. Pay attention to personal protection when applying UV lamps for disinfection to avoid damage to the human body, such as skin redness and conjunctivitis.