Back massager with buffer structure

The utility model relates to a back massager with a buffer structure. Mainly, a massage structure arranged on a supporting seat is provided with the buffer structure. A frame of the massage structure is pivoted on the supporting seat by sliding seats on both sides, and besides, the frame of the massage structure can generate the movable effect of forward and backward expansion and contraction. The hollow position of the frame is sheathed with an elastic rope, and the elastic rope is provided with a rolling wheel in an inserting way. When the rolling wheel receives force, the rolling wheel can generate swinging motion with a proper angle and expansion and contraction along with the expansion and contraction of the elastic rope so as to match with the expansion and contraction of the frame. Thus, a massage wheel can move by clinging to the back curve of the human body. As a consequence, the utility model can generate effects of elastic contact and massage.