Disclosed is a mite scattering device, comprising a mite holding container (10), with a plurality of first discharge holes distributed in the bottom of the mite holding container (10) and a dual-shaft motor (20) arranged in the middle of the mite holding container. The dual-shaft motor (20) is vertically and fixedly installed on the mite holding container (10) by means of a motor fixing plate (30) and a locking piece (40). Second discharge holes (301) of the same size as the first discharge holes are distributed in the motor fixing plate (30) at positions corresponding to the first discharge holes. A stirring shaft (50) rotating around the dual-shaft motor (20) is fixedly installed on a rotating shaft of the dual-shaft motor (20) inside the mite holding container (10). The stirring shaft (50) is located above the first discharge holes and the second discharge holes (301). A detachable isolating device (70) is arranged above the stirring shaft (50). A scattering tray (60) is fixedly installed on the other rota
