A femur supporting device is presented to improve the effect of dispersing sustained force of prior femur supporting device. This femur supporting device includes a femur stem with several inclined passageways； several supporting rods penetrates through the inclined passageways individually, with each supporting rod has a first connecting end and a second connecting end at two ends； a trochanter head with several first connecting portions to connect with the first connecting end of the supporting rods； and a fixing assembly with several second connecting portions to connect with the second connecting end of the supporting rods.一種股骨支撐裝置，用以解決習知股骨支撐裝置難以分散受力的問題。本發明的股骨支撐裝置包含：一股骨柄，設有數個斜通道；數個支撐桿，分別貫穿該數個斜通道，各該支撐桿的二端分別為一第一結合端及一第二結合端；一轉子頭，設有數個第一結合部供該支撐桿的第一結合端結合；及一固定組件，設有數個第二結合部供該支撐桿的第二結合端結合。
