A rhythm device includes a base, a moving seat, a first link, a second link and a driving device, wherein the moving seat is disposed on the base in a reciprocating manner along a predetermined axis The first ends of the two links are pivotally connected to each other, the second end of the first link is pivoted on the moving base, the second end of the second link is pivoted on the base, and the driving device is disposed on the base and connected At the pivotal connection of the two links, the driving device repeatedly moves the pivoting between a first position and a second position to reciprocate the movement in a predetermined axial direction. Thereby, regular rhythm is generated, and the person can promote circulation when leaning on the rhythm device.一種律動裝置,包含一基座、一移動座、一第一連桿、一第二連桿與一驅動裝置,其中,該移動座以可沿一預定軸向往復移動方式設置於該基座上;該二連桿的第一端彼此相樞接,第一連桿的第二端樞設於移動座,第二連桿的第二端樞設於基座;驅動裝置設置於基座且連接該二連桿的樞接處,驅動裝置重覆地帶動該樞接處於一第一位置與一第二位置間之移動,使移動作於預定軸向上往復移動。藉此,產生規律的律動,人員於律動裝置上倚靠時可促進循環。