Mist collecting apparatus, liquid ejecting apparatus, and method of controlling mist collecting apparatus

A mist collecting apparatus which sucks and collects mist that is generated due to ejection of a liquid includes: an exhaust duct from which a suction unit for sucking outside air extends downward; and a liquid absorbing member which is mounted to the suction unit so that a lower end portion thereof is disposed on an outside of the exhaust duct and an upper end portion thereof is disposed in the exhaust duct, wherein a suction pressure of the liquid absorbing member on a liquid by capillary force is equal to or greater than a difference between hydraulic heads of an upper and a lower end of the liquid absorbing member.