A biological measurement apparatus that can measure a biological component concentration with favorable precision is provided. This apparatus includes an infrared sensor that irradiates an arm with infrared light, receives infrared light that was reflected by the arm, and outputs light intensity data a holding unit that holds the infrared sensor such that the infrared sensor comes into contact with the arm a force sensor that detects the force with which the infrared sensor and the arm are pressed together a pressing force determination unit that compares the force with determination values and determines whether or not the force is in a predetermined range and a component concentration calculation unit that calculates a component concentration of the arm using the light intensity data that was output when the pressing force determination unit determined that the force is in the predetermined range.
