To miniaturize a massager.

A kneading ball arm 403R supporting kneading balls 402a and 402d is swingably supported on one end of an arm supporting member 404R. Another end of the arm supporting member 404R is connected via an eccentric slanted part eccentric and slanted with respect to a kneading shaft 410. A tapping shaft 510 is arranged above the kneading shaft 410. An attaching portion of the kneading ball arm 403R to the arm supporting member 404R is positioned between the tapping shaft 510 and the kneading shaft 410 in a height direction. The tapping shaft 510 and the arm supporting member 404R are connected by a link 550R. A spherical bearing 407R1(2) for fitting a spherical part 551R of an end part of the link 550R is provided in a position between the attaching portion of the kneading ball arm 403R to the arm supporting member 404R and the eccentric slanted part provided on the kneading shaft 410.