Mist collection device, liquid ejecting apparatus, and method for controlling mist collection device

A mist collection device capable of suctioning and recovering mist generated at the time of ejecting a liquid is disclosed. The mist collection device includes an exhaust duct having a suction portion which is installed to extend downwardly to suction external air. The suction portion is provided with a suction port extending in a vertical direction, and an upper end portion, which communicates with the exhaust duct, of the suction portion is installed to protrude in an annular shape from an inner bottom portion of the exhaust duct.