A measuring apparatus includes a wearing portion to be worn by a subject, a sensor unit for acquiring the biological information of the subject while being supported by the wearing portion and in contact with a test site of the subject, and a protrusion disposed around the sensor unit. The protrusion protrudes further than the sensor unit toward the subject when the sensor unit is not in contact with the test site. When the wearing portion is worn by the subject, the protrusion contacts with a periphery of the test site and deforms before the sensor unit contacts with the test site, thereby stretching the skin of the test site to be contacted by the sensor unit.
