A rhythmic bed according to the present invention comprises: a rhythmic bed set and a base, wherein the rhythmic bed set includes a bed frame, a plurality of fixed mattresses arranged on the bed frame, a movable mattress, and at least one provided under the movable mattress for abutment. One end of the bed frame is defined as a pivot end and the other end is a free end, and the base is pivoted by the pivot end of the bed frame. The base includes a free end on the bed frame. An upper supporting piece, a sensor provided on the base and corresponding to the free end, and a control device for controlling the rhythm bed to change the tilt height, thereby allowing the user to pass through the rhythm bed Inclined to show the state of the head and feet, and then change the height of the protrusion through any movable mattress to allow the affected part to achieve a tendon effect.
