Secondary fractures should be treated aggressively and generally do not heal on their own. If the secondary fracture has little effect on stability, it can be treated conservatively and then healed. If it is heavily displaced, affects the articular surface, or affects the stability of the periprosthetic fracture after arthroplasty, it needs to be treated surgically. Generally speaking, if the secondary fracture has little effect on stability, conservative treatment can be used. That is, the plaster or brace external fixation to limit the activities, fixation time of 2~3 months, most of the minor fracture can get better healing effect. If the secondary fracture is more serious, affecting the joint surface, or the fracture around the prosthesis after joint replacement affects the stability of the prosthesis, etc., it is difficult to be healed by conservative treatment, and surgical treatment may be needed. This is because the effect of self-recovery in this case is not ideal, and may even produce non-healing, deformed healing and so on. The second fracture needs to consult the doctor in time to determine the specific condition and follow the doctor’s instructions actively.