Hip arthroplasty is a mature clinical technique that can effectively treat a number of diseases that cause limitation of hip movement, such as middle to late stage femoral head necrosis, osteoarthritis of the hip joint, acetabular dysplasia, traumatic changes, and so on. Hip arthroplasty needs to be carried out under anesthesia, the hip joint capsule will be opened, the diseased femoral head will be removed, the acetabular side and femoral head side will be processed, the hip prosthesis will be installed, and the reset will be done to determine whether there is dislocation or not. After all the tests are finished, the wound will be cleaned up and sutured, and the patient is instructed to go down to the ground with the help of crutches in 3-4 days and to avoid doing some dangerous movements that will make the joint dislocated.