Disclosed is a shoulder joint prosthesis, comprising an outer cup (10), a liner (30), a bulb (20), and a humerus handle (21). The outer cup (10), the liner (30), and the bulb (20) are sequentially nested, wherein the outer cup (10) comprises an outer cup main body (11), and a first limiting convex wall (12) arranged at an opening of the outer cup main body (11)； the outer cup main body (11) is provided with a first spherical inner cavity (111), the first limiting convex wall (12) protrudes out of a central surface of the first spherical inner cavity (111), and an end surface of the outer cup main body (11) is lower than the central surface of the first spherical inner cavity (111)； the liner (30) comprises a hemispherical shell main body (31), and a second limiting convex wall (32) and a third limiting convex wall (33) arranged at an opening of the hemispherical shell main body (31)； and the hemispherical shell main body (31) is provided with a second spherical inner cavity (34) for containing the bulb (20), the second limiting convex wall (32) and the third limiting convex wall (33) are used for limiting the separation of the bulb (20) from the second spherical inner cavity (34), and a groove (35) for avoiding the humerus handle (21) is provided in the hemispherical shell main body (31). The shoulder joint prosthesis effectively solves the problem in the prior art of a non-limiting artificial shoulder joint being poor in activity stability when a bone structure or a rotator cuff is lost due to a tumor or a severe trauma.La présente invention concerne une prothèse d'articulation d'épaule, comprenant une cupule externe (10), une doublure (30), une ampoule (20), et une poignée d'humérus (21). La cupule externe (10), la doublure (30), et l'ampoule (20) sont séquentiellement imbriquées, la cupule externe (10) comprenant un corps principal de cupule externe (11), et une première paroi convexe limitante (12) disposée au niveau d'une ouverture du corps principal de cupule
