A tibial support of an artificial knee joint, comprising a main tibial support body (100) and a tibial support platform (200), wherein the main tibial support body (100) is wing-shaped, a central axis thereof being vertical to the tibial support platform (200). A plurality of hollow screw holes is provided at the upper part of the main body (100). The tibial support platform (200) is located above the main tibial support body (100). The surface of the tibial support platform (200) is an organic polymer material layer matching a tibial liner. The hollow screw holes in the tibial support are sealed by the polymer material layer. Because a tibial support of an artificial knee joint adopts a high-biocompatibility organic polymer material, physical machining is allowed in an operation, and meanwhile, the surface corrosion of the tibial support is reduced. Hollow screw holes are sealed by means of a polymer material layer, thereby inhibiting joint liquid from entering the holes, and reducing the transportation of particles. Recesses (201) are provided at positions, corresponding to the screw holes, on the polymer surface, thereby aiding in drilling holes and mounting screws in an operation.La présente invention concerne un support tibial dune articulation artificielle du genou, comprenant un corps de support tibial principal (100) et une plate-forme de support tibial (200), le corps de support tibial principal (100) étant en forme daile, un axe central de celui-ci étant vertical par rapport à la plate-forme de support tibial (200). Une pluralité de trous de vis creux sont prévus au niveau de la partie supérieure du corps principal (100). La plate-forme de support tibial (200) est située au-dessus du corps de support tibial principal (100). La surface de la plate-forme de support tibial (200) est une couche de matériau polymère organique correspondant à un insert tibial. Les trous de vis creux dans le support tibial sont scellés par la couche de matériau polymère. Étant do