The invention discloses a mouth muffle with an ear warming function and a mouth exposing hole. The mouth muffle comprises a mouth muffle body and ear hanging parts, wherein a pair of vertically arranged zips are mounted at the lower part of the mouth muffle body; a shielding part is arranged between the pair of vertically arranged zips; a lower fixing sleeve is fixed on a lower side line of one side, far away from a face, of the mouth muffle body; a pair of upper fixing sleeves in left and right symmetry are fixed at the upper part of one side, far away from the face, of the mouth muffle body; the middle parts of the ear hanging parts are arranged inside the lower fixing sleeves in a penetration manner; the left ends of the ear hanging parts penetrate through the upper fixing sleeve on the left side; the right ends of the ear hanging parts penetrate through the upper fixing sleeve on the right side; a pair of ear protecting sleeves are arranged at the ear hanging part in a sleeve manner. The mouth exposing hole is sealed by the shielding part of the mouth muffle body through the zips of the mouth muffle disclosed by the invention, so that a mouth can be conveniently and completely exposed without taking off the mouth muffle, moreover, the lengths of the ear hanging parts can be adjusted through magic tapes at two ends of the ear hanging parts; in addition, an ear protection sleeve function is integrated for the ear hanging parts, so that not only is the purchase cost of an ear sleeve reduced, but also the mouth muffle is convenient to wear and contain.