A motor-noise absorbing apparatus of a vacuum cleaner is disclosed. The motor-noise absorbing apparatus includes a body seated and fixed on a peripheral part of an opening of a motor housing to close between the motor housing and a stator core and, thus, to restrict an amount of the air discharged between the motor housing and the stator core, a first air discharging part formed in the middle of the body, so that most of the air comes out of the guide vein is discharged between the stator core and a rotor, and at least one second air discharging part formed to penetrate a peripheral part of the body, so that a portion of the air coming out of the guide vein is discharged between the motor housing and the stator core.