Type A fractures are located at the proximal end of the prosthesis, with a greater or lesser rotor fracture. Type B fractures occur around or just below the stem of the prosthesis; Type B1 prosthesis is firmly fixed with no significant bone loss; Type B2 prosthesis is loose but without significant bone loss; Type B3 prosthesis is loose and has significant bone loss. Type C fractures occur at a distance from the tip of the prosthesis. Treatment: Most type A fractures can be treated with bed/braking and close observation; if the fracture is due to severe osteolysis, revision surgery should be performed, and if necessary, the acetabular prosthesis can be revised at the same time; type B fractures are common, with different fixation methods for different subtypes; longitudinal split type B1 fractures are fixed with 3 to 4 wire ties; spiral and oblique type B1 fractures are fixed with fracture incision and 3 allograft deep cryogenic frozen cortical bone plates. Type B2 fractures are in principle revised using a femoral extension shank, combined or not with a long allograft cortical bone reinforcement, and also feasible with retained prosthesis fracture incision and reduction locking plate wire internal fixation and autologous iliac bone implantation; Type B3 fractures should be fixed with a 200 mm long shank bone B3 fracture should be revised with a 200 mm long stem bone cement prosthetic stem and reinforced with allograft cortical bone plate; Type C fracture requires incision and internal fixation, if the prosthesis is loose, the fracture can be treated with incision and internal fixation first, and then revised after the fracture heals.