An air purifying system may include at least two air purifiers configured to operate independently and a docking station to support the at least two air purifiers. The docking station may include a backbone extending in a vertical direction and at least two supports corresponding to and supporting the at least two air purifiers. At least one air purifier may have a display configured to operate according to a plurality of modes. When the air purifier having the display is docked on the docking station, the display may indicate overall operating information of the entire air purifying system. When the air purifier having the display is separated from the docking station, the display may indicate individual operating information of the air purifier having the display.