A noise-cancelling headphone comprising: a housing unit having an interior and an exterior; a driver unit attached to the housing unit; a first air chamber disposed behind the driver unit; and a microphone collecting sounds at the exterior of the housing unit, wherein the housing unit comprises: an accommodating portion accommodating the microphone; and a vent hole establishing communication between the first air chamber and the exterior of the housing unit, wherein the housing unit is constructed such that emitted sounds from the vent hole are prevented from being collected by the microphone, wherein the housing unit has a sound collecting hole establishing communication between the accommodating portion and the exterior of the housing unit, the sound collecting hole is disposed in a position on the housing unit which prevents the emitted sounds from the vent hole from being collected by the microphone, and wherein the sound collecting hole is disposed in an upper portion of the housing unit between the microphone and a connection member for connecting left and right ear pieces in a worn state of the headphone and the connection member does not cover the sound collecting hole in a worn state of the headphone and a sound collecting face of the microphone faces the sound collecting hole such that the sound collecting face is directed toward the upper side in a worn state of the headphone, the positioning of the microphone and the sound collecting hole being such that generation of noises caused by wind pressure on the housing unit is reduced. a housing unit having an interior and an exterior; a driver unit attached to the housing unit; a first air chamber disposed behind the driver unit; and a microphone collecting sounds at the exterior of the housing unit, wherein the housing unit comprises: an accommodating portion accommodating the microphone; and a vent hole establishing communication between the first air chamber and the exterior of the housing unit, wherein an accommodating portion accommodating the microphone; and a vent hole establishing communication between the first air chamber and the exterior of the housing unit, wherein the housing unit is constructed such that emitted sounds from the vent hole are prevented from being collected by the microphone, wherein the housing unit has a sound collecting hole establishing communication between the accommodating portion and the exterior of the housing unit, the sound collecting hole is disposed in a position on the housing unit which prevents the emitted sounds from the vent hole from being collected by the microphone, and wherein the sound collecting hole is disposed in an upper portion of the housing unit between the microphone and a connection member for connecting left and right ear pieces in a worn state of the headphone and the connection member does not cover the sound collecting hole in a worn state of the headphone and a sound collecting face of the microphone faces the sound collecting hole such that the sound collecting face is directed toward the upper side in a worn state of the headphone, the positioning of the microphone and the sound collecting hole being such that generation of noises caused by wind pressure on the housing unit is reduced.