The product "sterilizable core mask" is equipped with an ultraviolet disinfection box. The box is a V-shaped ultraviolet disinfection lamp piece. There is a small drying and ventilation system below to dry the mist and water drops on the mask. There is an indicator on the use degree of the filter element on the mask. When the filter element is discarded and needs to be replaced in time, the red light will light up. The mask can be used repeatedly. The filter element of the mask is disposable and made of nanofibers, which can effectively prevent viruses, pm2.5 particles, oily particles and other pathogens. The mask is designed for hanging ears, and there is a soft rubber pad behind the ears to improve the comfort of wearing the mask, and it will not feel oppressive when worn for a long time.