An elastic spinal fusion device includes: a fusion device having a head portion and a tail portion, wherein the circumferential surface of the fusion device is provided with an uninterrupted spiral structure to provide elastic buffering, and the first and second ends of the spiral structure are respectively stopped On the two sides of the tail, and the spiral segments form parallel lines, and a through-the-screw structure and an adjustment hole of the fusion device; when the fusion device is disposed between the spines, the pressure is reduced. The stress can be eliminated, and the spiral structure can increase the tolerance and stability of the fusion device.一種彈性脊椎融合裝置,包括:一融合裝置具有一頭部及一尾部,該融合裝置的周面環設一不間斷的螺旋狀結構以提供彈性緩衝,該螺旋狀結構的首末兩端分別止於該尾部兩側,且該螺旋狀結構所形成的線段皆相互平行,及一穿經該螺旋狀結構並貫設該融合裝置的調整孔道;當該融合裝置設置於脊椎間時具有減壓作用能排除應力,此外該螺旋狀結構能增加該融合裝置的承受度及穩定性。