BIOLOGICAL INFORMATION MEASURING APPARATUS

PROBLEM TO BE SOLVED: To provide a blood sugar level measuring apparatus which has blood sugar measurement accuracy at a practical level.SOLUTION: A biological information measuring apparatus includes a near infrared light source 110, a light source side optical fiber 120, a detection side optical fiber 140, a near infrared absorption spectrum measuring apparatus 150, and a data analysis device 170. The biological information measuring apparatus 100 further includes an attachment 130 for measurement comprising a contact surface 131 with which a living body is brought into contact, a light source side optical fiber fixing part 132, a detection side optical fiber fixing part 133, and a light guide space 134 for guiding near infrared light from the light source side optical fiber 130 through a gap to a biological information acquisition part and also guiding near infrared light diffused and reflected at the biological information acquisition part through the gap to the detection side optical fiber 140.