The invention is provided to suppress a deterioration in the accuracy of measuring a component in a test object, which is caused by temperature variation due to irradiation with light. A blood sugar level measurement apparatus 10 includes a light emitting unit 110 that emits light toward a test object, a light receiving unit 112 that receives light that has been emitted by the light emitting unit 110 and has been reflected within or has passed through the test object, a light emission control unit 204 that performs control so as to cause the light emitting unit 110 to repeat a light emission state and a light extinction state, and a blood sugar level calculation unit 214 serving as a measurement unit that measures a component in the test object by using a result of light reception by the light receiving unit 112.
