The present creation provides a supporting member for implanting into a vertebra of a subject , including: a hollow body including an upper surface and a lower surface opposite the upper surface; a first guiding part formed on the upper surface; a second guiding part corresponding to the first guiding part and formed on the lower surface; a first engaging part formed on the upper surface; and a second engaging part corresponding to the first engaging part and formed on the lower surface; where in the second guiding part extends out an extending part from a side of the hollow body, and the extending part is configured to be slidably coupled to a first guiding part of another supporting member sliding to the lower surface of the supporting member, as a result two supporting members are slidably coupled to each other and engaged to each other. According to the creation, one single supporting member can be implanted into a vertebra of a subject, or two or more supporting members can be in sequence introduced into a vertebra of a subject and combined together therein.本創作提供一種支撐件用於植入個體之脊椎體中,包含:一中空體具有一上表面及一下表面相對該上表面;一第一導引部形成於該上表面;一第二導引部對應該第一導引部形成於該下表面;一第一扣合部形成於該上表面;以及一第二扣合部對應該第一扣合部形成於該下表面,其中第二導引部係由中空體一側向外延伸出一延伸部,以提供另一支撐件之第一導引部滑動結合,另一支撐件藉由延伸部之引導滑動至支撐件之下表面,兩支撐件分別之第一、二導引部彼此滑接且第一、二扣合部彼此扣合。依據本新型,單個支撐件可植入個體的脊椎體內,或二個或二個以上的支撐件可依序導入個體的脊椎體並在其內進行組合。