The winter of 2021 is approaching, and the spread of foreign epidemics is accelerating. At the same time, the domestic forms of epidemic prevention and control are also quite severe. We cannot relax our vigilance, and we must pay great attention to the wearing of medical protective mask. Recently, the media reported a news about the virus infection after wearing the disposable protective mask. The reason for this situation is the failure to wear the non-woven protective mask correctly.