A skull vibration device includes: an electrical signal generator configured to generate an electrical signal; an amplifier configured to amplify the electrical signal from the electrical signal generator; a vibration generator configured to convert the electrical signal transmitted from the amplifier to a mechanical vibration; a metal vibration member to which a vibration generating portion of the vibration generator is directly coupled, and which is configured to cover a skull of a human body with a predetermined spacing left between the vibration member and the skull; and a vibration member supporter configured to suspend the vibration member while preventing direct or indirect contact of the vibration member with the human body, and to keep the vibration member at a predetermined distance from the skull. A vibration generated from the vibration member is transferred to the skull through a vibration of air.