Noise-proof structure of air conduction earphone for audiometry

An anti-noise structure of an air conduction earphone for audiometry comprises an earphone shell, a loudspeaker, a sound insulation filling layer, an inner sound insulation pad and an outer sound insulation cover, the loudspeaker is arranged on the earphone shell, a loudspeaker hole faces outwards, the space between the interior of the earphone shell and the loudspeaker is filled with the sound insulation filling layer, the inner sound insulation pad is arranged on the loudspeaker and is of a ring body structure, and the outer sound insulation cover is arranged on the inner sound insulation pad. The ring body inclines from the periphery to the inner side to form a concave inclined table, the middle of the concave inclined table is provided with a sound guide hole communicated to the horn hole, and the outer sound insulation cover annularly wraps the outer side of the inner sound insulation pad. The structure can reduce oppression on the outer auricle of the ear, improve the wearing comfort, improve the sound