N95 masks are recommended to use ultraviolet irradiation for disinfection, through ultraviolet irradiation can inhibit the synthesis of viral DNA or RNA, to achieve the role of killing viruses, it is recommended to use ultraviolet irradiation is not shorter than half an hour. However, it is not recommended to disinfect the N95 mask with high-temperature steam, because this can lead to the deformation or loosening and aging of the N95 mask, which can damage the filtration and fail to meet the requirements of air tightness and prevent bacteria or viruses. In addition, you can wear the N95 mask correctly in normal life, which can extend the life of the N95 mask.