At the State Council’s joint prevention and control mechanism conference, Wu Zunyou, chief epidemiologist at the China Center for Disease Control and Prevention, said, “Ordinary people’s masks can be reused,” but the phrase needs to be read in the context of the context of the sentence. Some people go out and wear 7-8 masks at once, which is completely unnecessary. Ordinary people generally use a disposable medical mask when they go out, and there is no need to wear it once, and throw it away immediately after making a phone call or drinking water, when the mask can be reused. However, if the mask is broken, dirty or wet, it needs to be replaced in time, at this time it cannot play a protective role.