PROBLEM TO BE SOLVED: To provide a headgear for brain wave measurement fitted to various shapes of persons' heads and preventing strong pressure from being applied to a specific site of the head part.SOLUTION: The headgear for brain wave measurement includes a substantially semicircular outer shell 4, a belt-like body 2 having an electrode 3, a plurality of first elastic bodies 7a. A headgear outer shell 10 in which one ends of the plurality of first elastic bodies 7a are connected to both ends of the outer shell 4 respectively is provided. Both ends of the belt-like body 2 and/or the other end of the plurality of second elastic bodies 7b, the respective ends of which are connected to both ends of the belt-like body 2 respectively, are further connected to the headgear outer shell part 10. The headgear for the brain wave measurement can measure brain waves of persons whose heads have various shapes, at a desired position without any pain.
