Each patient with femoral neck bone cyst is different and is treated differently. Usually, dynamic observation, minimally invasive surgery and artificial hip replacement surgery are the main treatments. 1. Dynamic observation: If the cyst is small, temporary dynamic observation can be taken to observe whether the cyst has a tendency to get bigger, and regular radiographs can be taken for diagnosis. 2. Minimally invasive surgery: patients can also adopt minimally invasive surgery in the early stage of the cyst to reduce the pressure inside the cyst wall and implant bone particles to promote the normal growth of bone. 3. Artificial hip joint replacement surgery: when the patient has femoral neck bone cyst caused by hip dysplasia, the joint surface of the femoral head has been deformed and partially collapsed, so the patient can only undergo artificial hip joint replacement surgery in order to solve the problems of the hip joint and the bone joint at the same time. When femoral neck bone cysts occur, it is recommended that patients go to the hospital in time, to clarify the cause of the disease, to deal with the cause of the disease, and if necessary, to carry out surgical treatment.