A bio-information measuring apparatus is provided, which suppresses pressure on a capillary vessel of body, stabilizes a measuring result of bio-information, and obtains a good S/N ratio.In an bio-information measuring apparatus 1 in which a self-emission-type sensor device 10 for optically measuring bio-information of specimen 4 is attached to an attaching member 2, the attaching member 2 is composed of elastic material, and the attaching member 2 is arranged to be brought into contact with the specimen 4 at the time of measuring the bio-information.
