Mask with ultraviolet sterilization effect

The invention provides a mask with an ultraviolet sterilization effect; the mask comprises a mask body which can cover the mouth and nose of a user and is provided with a first air vent and a one-way exhaust structure; the mask also comprises a shell, an ultraviolet component and a filtering assembly; the shell is provided with at least one air inlet, a second air vent and a sterilization channel communicated with the air inlet and the second air vent, and the second air vent of the shell is communicated with the first air vent of themask body; the ultraviolet component can emit ultraviolet rays and is arranged in the shell, and the ultraviolet rays emitted by the ultraviolet component irradiate the sterilization channel of the shell; the filtering assembly is of a porous structure, is arranged in the shell and covers the second ventilation opening of the shell, so that air entering from the air inlet of the shell must pass through the filtering assembly to reach themask body; and by adopting the structure, t