It is not recommended to enter the house immediately after disinfection with UV lamps, but can be ventilated for 20~30 minutes before entering the house to avoid adverse effects on the organism. Ultraviolet sterilization is mainly on the role of nucleic acids, so that bacterial proteins are affected by the inactivation, for high-intensity ultraviolet lamps, its irradiation of ozone concentration is also high, so ultraviolet lamp disinfection is not recommended to go into the house immediately after the first window can be opened to ventilate the house for 20 ~ 30 minutes, such as ozone diffusion or decomposition and then enter. Ultraviolet disinfection lamp is the use of mercury lamps emitted by ultraviolet light, to achieve the purpose of sterilization and disinfection of its radiation intensity, daily should be used correctly and reasonably, to avoid being injured by ultraviolet lamps.