The utility model discloses a multipurpose supersonic atomizing device. On the basis of the prior art, the utility model adopts structure which is similar to a negative-pressure type atomizing chamber. The utility model is characterized in that the inner of the atomizing chamber is provided with a main air port which overtops the bottom of the atomizing chamber, a blower is installed in a casing and is positioned at the lower part of the main air port, and air entrance windows are arranged at the both sides of the atomizing chamber. The utility model has the advantages of simple structure and good atomizing effect. The utility model has the integrative function of air purification, humidification, disinfection and water treatment. The utility model is a comparatively ideal supersonic atomizing device.