The air purification apparatus includes a duct (10), a filter (20) for air purification, an electrostatically atomizing device (30), a fan (40), and a switching device (50). The duct (10) has an inlet (11) and an outlet (12). The filter (20) is placed inside of the duct (10). The electrostatically atomizing device (30) is configured to generate a mist of charged minute water particles by means of electrostatically atomizing phenomenon and discharge the same into the duct (10). The fan (40) is configured to send air from the inlet (11) to the outlet (12). The switching device (50) is configured to switch one of a first mode and a second mode. The air purification apparatus is configured to send a mist of charged minute water particles from the electrostatically atomizing device (30) to the outlet (12) not through the filter (20) in said first mode. The air purification apparatus is configured to send a mist of charged minute water particles from the electrostatically atomizing device (30) to the filter (20) in the second mode.
