A concentration measurement method of measuring a concentration of a glucose contained in a biological sample in a sensor chip including: an electrode unit including a working electrode and a counter electrode, the electrode unit including a reagent containing an electrolyte, and a capillary allowing the biological sample to be introduced therein, the concentration measurement method comprising: introducing a predetermined amount of the biological sample into the capillary, characterized in that the concentration measurement method comprises: after the introduction of the biological sample, performing a temperature measurement of measuring a temperature of the biological sample by applying a first voltage to the electrode unit when the temperature of the biological sample is measured, the first voltage allowing the temperature measurement to be less affected by increase and reduction in an amount of the glucose contained in the biological sample, and then a concentration measurement of measuring the concentration of the glucose contained in the biological sample by applying a second voltage to the electrode unit; or performing the concentration measurement of measuring the concentration of the glucose, and then the temperature measurement of measuring a temperature of the biological sample, wherein both in the case that the temperature measurement is performed and then the concentration measurement is performed and in the case that the concentration measurement is performed and then the temperature measurement is performed, the first voltage applied in the temperature measurement is greater than the second voltage applied for measuring the concentration of the glucose in the concentration measurement, the first voltage applied in the temperature measurement is equal to or more than 1.0 V, or equal to 1.25 V, or equal to 1.5 V, and the second voltage applied for measuring the concentration of the glucose in the concentration measurement is within a range of 0.1 V to 0.5 V. introducing a predetermined amount of the biological sample into the capillary, characterized in that the concentration measurement method comprises: after the introduction of the biological sample, performing a temperature measurement of measuring a temperature of the biological sample by applying a first voltage to the electrode unit when the temperature of the biological sample is measured, the first voltage allowing the temperature measurement to be less affected by increase and reduction in an amount of the glucose contained in the biological sample, and then a concentration measurement of measuring the concentration of the glucose contained in the biological sample by applying a second voltage to the electrode unit; or performing the concentration measurement of measuring the concentration of the glucose, and then the temperature measurement of measuring a temperature of the biological sample, wherein both in the case that the temperature measurement is performed and then the concentration measurement is performed and in the case that the concentration measurement is performed and then the temperature measurement is performed, the first voltage applied in the temperature measurement is greater than the second voltage applied for measuring the concentration of the glucose in the concentration measurement, the first voltage applied in the temperature measurement is equal to or more than 1.0 V, or equal to 1.25 V, or equal to 1.5 V, and the second voltage applied for measuring the concentration of the glucose in the concentration measurement is within a range of 0.1 V to 0.5 V. after the introduction of the biological sample, performing a temperature measurement of measuring a temperature of the biological sample by applying a first voltage to the electrode unit when the temperature of the biological sample is measured, the first voltage allowing the temperature measurement to be less affected by increase and reduction in an amount of the glucose contained in the biological sample, and then a concentration measurement of measuring the concentration of the glucose contained in the biological sample by applying a second voltage to the electrode unit; or performing the concentration measurement of measuring the concentration of the glucose, and then the temperature measurement of measuring a temperature of the biological sample, wherein both in the case that the temperature measurement is performed and then the concentration measurement is performed and in the case that the concentration measurement is performed and then the temperature measurement is performed, the first voltage applied in the temperature measurement is greater than the second voltage applied for measuring the concentration of the glucose in the concentration measurement, the first voltage applied in the temperature measurement is equal to or more than 1.0 V, or equal to 1.25 V, or equal to 1.5 V, and the second voltage applied for measuring the concentration of the glucose in the concentration measurement is within a range of 0.1 V to 0.5 V.