When using UV disinfection, it is usually recommended that patients be irradiated for about 30-60 minutes in order to achieve the disinfection and sterilization effect. UV disinfection is a commonly used physical disinfection method in clinical practice, but because UV light may cause certain damage to human skin and eyes while playing a disinfecting and sterilizing role, personnel need to leave the corresponding room in time after the UV light is turned on, or they can wait until no one is irradiating and disinfecting at night to prevent personnel from accidentally entering the room and causing physical harm. After the completion of UV disinfection, you need to promptly open the window for 30 minutes to disperse the ozone and other substances produced in the disinfection process, so as not to cause discomfort. The disinfection effect of ultraviolet radiation lies in the length of continuous irradiation time, so we must operate according to the corresponding regulations, to avoid the time is too short, otherwise the effect of disinfection and sterilization can not be achieved.