System of the present invention provides a kind of foot supports device, to fixed foot, makes knee bends, it includes have: a main body； One space, if in the what main body, and run through two side of main body； The main body bottom end system is for connecting what operating table； One manipulation part, is arranged the what body peripheral face, can upper and lower displacement； There is an inserting column inside the manipulation part； One support frame, has a bracket and one or more supporter, which has a jack； The carriage support of the support frame is fitted into the space of the main body, can be rotated in the what space. When support frame to be clasped, which is moved down, the inserting column is made to be inserted into the jack of the bracket, uses and fixes the support frame； User simultaneously rotates the manipulation part, and the manipulation part is made to clasp the main body. In addition, the left or right side of the equal convertible what eyelid retractor of supporters, for the left foot or right crus of diaphragm of immobilized patients.本發明係提供一種足部支撐器，用以固定足部，使膝蓋彎曲，其包含有：一主體；一空間，設於該主體中，並貫穿該主體二側；該主體底端係供連接於手術台；一操控件，套設於該主體周面，可上下位移；該操控件內部具有一插柱；一支撐架，具有一支架及一個或一個以上的支撐體，該支架具有一插孔；該支撐架之該支架係裝入該主體之空間中，可於該空間內轉動。欲扣住支撐架時，將該操控件往下移動，使該插柱插入該支架之插孔，藉以將該支撐架固定；使用者並轉動該操控件，使該操控件扣住該主體。此外，該等支撐體可變換於該支撐器的左側或右側，以供固定患者的左腳或右腳。
