The invention discloses an emergency breathing apparatus for internal clinical medicine, and belongs to the technical field of medical apparatus. According to the technical scheme, the emergency breathing apparatus for internal clinical medicine comprises an oxygen bottle, an airbag, a squeezing device, a regulating device and a respiratory mask, wherein one end of the airbag is connected to the oxygen bottle by virtue of a first pipeline and the other end of the airbag is connected to the respiratory mask by virtue of a second pipeline; the regulating device is arranged on the second pipeline; and a gas check valve is arranged on the first pipeline. The breathing apparatus disclosed by the invention has the beneficial effects that oxygen in the oxygen bottle can be effectively delivered into respiratory tracts, so as to offer oxygen to patients with dyspnea and patients who cannot breathe spontaneously; in addition, a superposing degree of a disc A and a disc B can be regulated by virtue of the regulating device, so as to control an oxygen volume; and furthermore, a strainer is arranged in the respiratory mask, so that impurities in the oxygen can be filtered off to avoid the circumstance that diseases become worse in the case that the impurities are inhaled by the patients.