The invention discloses a bone trabecula hip joint system. The system comprises a series of bone trabecula assembled femoral components, caput femoris, bone trabecula oversleeves, bone trabecula assembled acetabular cups and bone trabecula acetabulum cushion blocks. The surface structures of the bone trabecula assembled femoral components, the caput femoris, the bone trabecula oversleeves, the bone trabecula assembled acetabular cups and the bone trabecula acetabulum cushion blocks are all metal bone trabecula structures and manufactured by means of the metal 3D printing technology, the structural form of holes and porosity can be accurately controlled, a plurality of specifications are available, and assembly can be conducted freely. The system has the advantages that fastness and effectiveness are realized, postoperation osseointegration is facilitated, service life is prolonged, postoperation revision rate is reduced, serious femur and acetabulum deformation is effectively solved, complicated joint primary replacement surgery and revision surgery under the condition of various forms of bone defects can be conducted, and the requirements of various patients for prosthesis customization are met.