Head-down femoral neck fracture is the most difficult to heal among all kinds of femoral neck fracture, incomplete statistics of clinical non-union probability of less than 60%, the probability of femoral head necrosis is higher, the current clinical recommendations for early surgical restoration and internal fixation, postoperative recovery is good, and walking function is basically not limited. For patients under 65 years old, closed reduction intramedullary nail internal fixation can be used for femoral neck fracture of subcapital type. If the fracture heals well after surgery and there is no serious complication such as femoral head necrosis, the patient’s basic activities will not be affected. If necrosis of the femoral head occurs in some patients after surgery, a second operation is needed to replace the hip joint, and the recovery after surgery is good, and the patient’s walking and daily life are basically unaffected. For elderly patients over 65 years of age, it is generally directly recommended to perform artificial femoral head replacement, and the general weight-bearing walking is not affected after the operation. Femoral neck fracture head down type, early detection, early surgical treatment, the probability of recovery of patients is still very large, if you must be conservative treatment, due to the poor blood flow of the femoral head, the probability of femoral head necrosis is very great, it is recommended that the patient must not be negligent, so as not to delay the condition.