A biological measurement apparatus includes a first detecting section including a first infrared sensor radiating an infrared ray on an arm, receiving the infrared ray reflected from the arm, and outputting light intensity data and a first force sensor detecting a contact force between the first infrared sensor and the arm, a second detecting section including a second infrared sensor and a second force sensor, a holding section holding the first detecting section and the second detecting section such that the first and second infrared sensors contact the arm, a pressing-force determining section comparing the force with a determination value and determining whether the force is within a predetermined range, and a component-concentration calculating section calculating a blood sugar level using the light intensity data when the pressing-force determining section determines that the contact force is within the predetermined range.
