To reduce the time required for centering work and improve assembly work efficiency for a massage device when supporting a shaft that moves a jet part having a jet nozzle, and to reduce costs without hindering movement of the jet nozzle. This massage apparatus comprises: a rotary drive part (11)； a shaft (9), one end (9a) of which is rotatably connected to the rotary drive part (11) and is supported by a bearing (27), and the other end (9b) of which extends in one direction inside a liquid tank (1)； threaded gears (25A, 25B) disposed on the shaft (9)； a jet part that is able to move along the shaft (9) with the threaded gears (25A, 25B), has a jet nozzle at the top, and can be rotated by the rotation of the threaded gears (25A, 25B)； and a support mechanism that supports the other end (9b) of the shaft (9) in a non-fixed state.本發明之課題，係於支持用以使具有噴射口之噴射部移動之軸時，縮短其之定心作業所需之時間且使按摩裝置之組裝作業性提高，可在不對噴射口之移動產生妨礙影響之下謀求降低成本。其解決手段為：具有：旋轉驅動部11；軸9，係一端側9a可旋轉驅動地與旋轉驅動部11連結且由軸承27支持，並且另一端側9b於液槽1內的一方向延伸；螺旋齒輪25A、25B，係設置於軸9；噴射部，係可與螺旋齒輪25A、25B一起沿著軸9移動，且於上部具有噴射口，並且藉由螺旋齒輪25A、25B之旋轉而可旋動；以及支持機構，係以非固定狀態支持軸9的另一端側9b。
