Provided are a treatment unit and a massage machine which realize treatment with a twisting motion added thereto.Means for ResolutionA seat part unit 10 includes a four-finger part 1 for pressing a person to be treated, a treatment part 2 having the four-finger part 1, an output shaft 30 which drives the treatment part 2, a drive part 3 which rotates the output shaft 30, and a cam 4 which is a swash plate eccentric cam which rotates integrally with the output shaft 30, in which the treatment part 2 oscillates in a direction along a rotation axis G of the output shaft 30 and a direction intersecting the direction without rotating with the rotation of the cam 4.
