The utility model relates to a mask with the service life prompting function. The mask comprises a mask body provided with multiple filter layers. A prompting device is arranged among the filter layers of the mask body. The prompting device is provided with an identification unit and an elastic component, wherein the identification unit protrudes out of the outermost filter layer of the mask body, and the elastic component can make the identification unit send identification information so that the service life of the mask can be judged through the identification unit. According to the mask, when the identification unit can not send the identification information, the service life of the mask is over, and a user is prompted to change the mask in time so as to guarantee physical health.