PROBLEM TO BE SOLVED: To provide a contact pickup system which can pick up vibration during mastication and vibration during deglutition with high sensitivity and utilize them.SOLUTION: A contact pickup system 1, which contacts the human body and picks up the vibration transmitting through the body tissue, is equipped with a contact pickup body 10 which picks up the vibration and converts it to electric signals and a casing 20 which holds the contact pickup body 10 and has a space 22 at least between a component 21 forming a part of an exterior surface and the contact pickup body 10.
