预防性消毒指在未发现传染源的情况下,经常采用一定的处理措施,杀灭、消除物品、人体或环境可能污染的病原微生物,达到防止传染病发生的目的。公共场所及设施中需要消毒的对象是日常生活中与人接触多的物品,如室内空气与物品、饮水、餐(茶)具、被褥等,以及人体皮肤,尤其是手部, Preventive disinfection refers to the use of certain treatment measures to kill or eliminate pathogenic microorganisms that may be contaminated by objects, human or environment, and to prevent the occurrence of infectious diseases when no source of infection is found. Public places and facilities need to be disinfected objects in daily life and more people in contact with items such as indoor air and articles, drinking water, food (tea), bedding, etc., as well as human skin, especially the hands,