The utility model relates to a magnetic-vibrating sputum aspirator which is used for sucking out the sputum at the mouth cavities and pharyngeal parts of neonates and stuporous patients and which is composed of an electromagnetic pump, a liquid storing bottle and a sputum aspirating tube. The electromagnetic pump is composed of E-shaped iron-core coils, two magnetic vibration hammers, two vibration rods and two air cylinders. Alternating magnetic field is generated in the E-shaped iron-core coils through alternating current, and the magnetic vibration hammers and the vibration rods swing in cocurrent so as to bring the two air cylinders to move. One air cylinder produces suction effect due to the on-off conditions of the flap valves in the air cylinders, which causes negative-pressure in the liquid storing bottle. Sputum can be sucked out through putting the sputum aspirating tube into human's mouth cavity.