To provide a humidifier capable of properly diffusing volatilized odor components.

In this humidifier 1 wherein the water is evaporated by an evaporating means 6 in a humidifier main body 2, the steam evaporated by the evaporating means 6 is guided to a cylindrical body 7 constituting a steam passage, and the steam flow S guided by the cylindrical body 7 is discharged from a steam discharge opening 7A to the outside of the humidifier main body 2, a fragrant material or the like is put on a pan 22 detachably attached to the steam discharge opening 7A, and the steam flow S is guided to an upper space of the pan 22 by a flap 26, thus an aroma component volatilized from the fragrant material or the like on the pan 22 is properly diffused with the steam flow S with moisture to a space where the humidifier 1 is used.