A treatment unit includes a treatment element configured to press a person to be treated； a treatment part that includes the treatment element； an output shaft that drives the treatment part； a drive part configured to rotate the output shaft； and a swash plate eccentric cam that rotates integrally with the output shaft. The treatment part oscillates in a direction along a direction of an axis of rotation of the output shaft and a direction intersecting the direction of the axis without rotating along with rotation of the swash plate eccentric cam.
