The present invention provides a spinal implant structure. The spinal implant structure comprises a first tube, a second tube and at least one expansion arm. The second tube is disposed on the horizontal orientation of the first tube and does not overlap with the first tube. The diameter of the first tube is larger than that of the second tube. One end of the expansion arm is connected to the first tube, and the other end of the expansion arm is free end. The expansion arm and the first tube create an angle. The expansion arm includes a supporting arm. One end of the supporting arm is connected to the expansion arm, and the other end of the supporting arm is connected the second tube. The support arm includes a plurality of structure weakness. When the distance between the first tube and the second tube changes, the support arm bends from the structure weakness, thereby the angle is increased and the spinal implant structure is expanded. The first tube, the second tube, the expansion arm and the supporting arm are integrally formed.本發明提供一種脊椎植入結構體，包括第一筒體、第二筒體以及至少一擴張臂。第二筒體設置於第一筒體的筒身方向延長線上，且不與第一筒體重疊。第一筒體的筒徑係大於第二筒體的筒徑。擴張臂之一端連接第一筒體並與第一筒體夾一角度，擴張臂之另一端為一自由端。擴張臂具有一支撐臂，支撐臂之一端連接擴張臂，支撐臂之另一端連接第二筒體。支撐臂包含多個弱化處，當第一筒體與第二筒體之間的距離改變時，支撐臂於弱化處彎折帶動擴張臂移動，使角度增加並擴張脊椎植入結構體。第一筒體、第二筒體、擴張壁及支撐臂係為一體成形結構。
