A buffering surface-type knee joint is formed by connecting a femoral condyle prosthesis (1), a butterfly movable platform (2), a butterfly tibia platform prosthesis base (3), a tibia platform implant (4) and a buffer vibration absorber (3.3, 3.4, 3.5), which is installed on the butterfly tibia platform prosthesis base (3)reinforcing ribs (1.1) are arranged at the inner surface of the femoral condyle prosthesis (1), and a pair of bone grafting cabins (1.2) is symmetrically arranged at the rear end of the femoral condyle prosthesis (1)an ultra-radius spherical hole (2.1) is arranged at the middle bottom of the butterfly movable platform (2) a spherical pile (3.1), a limit post (3.2) and a shock damper hole (3.6) are arranged on the butterfly tibia platform prosthesis base (3),charactered in that the implant at the bottom center of the butterfly tibia platform prosthesis base (3) is cylindrical, the tibia platform implant (4) is in a hollow cylindrical wall porous structure, and a screwed hole is arranged at the horizontal plane of the upper end of the hollow cylindrical wall porous structure. The buffering surface-type knee joint reduces the contrecoup stress which is generated between the moving prostheses effectively, prolongs the service life of the prostheses, and has the characteristic of good stability.Linvention concerne une articulation de genou de type à surface tampon, formée en reliant une prothèse de condyle fémoral (1), une plateforme mobile en papillon (2), une base de prothèse de plateforme tibiale en papillon (3), un implant de plateforme tibiale (4) et un absorbeur de vibrations tampon (3.3, 3.4, 3.5), qui est installé sur la base de prothèse de plateforme tibiale en papillon (3) des nervures de renfort (1.1) sont conçues au niveau de la surface interne de la prothèse de condyle fémoral (1) et une paire de chambres de greffe osseuse (1.2) est conçue de manière symétrique au niveau de lextrémité arrière de la prothèse de condyle fémoral (1) un trou sp
