PROBLEM TO BE SOLVED: To shorten a time required for a centering work when supporting a shaft for moving an injection part with an injection port, to improve an assembly workability of a massage device, and to reduce a cost without hindering the movement of the injection port.SOLUTION: A massage device includes: a rotation drive part 11 a shaft 9 whose one end side 9a is connected in such a way as can be rotationally driven to the rotation drive part 11 and is supported on a bearing 27, and whose the other end side 9b extends in one direction in a liquid tank 1 a mobile carriage 2 including an injection part which is movable in a guided state by the shaft 9, has an injection port, and is rotatable and a support mechanism which is arranged on the mobile carriage 2 and supports the other end side 9b of the shaft 9.SELECTED DRAWING: Figure 1
