Measure and record the angle between horizontal line and axis of femur, simulate each type of the Pauwels classification and then measure the angle between the fracture line and the femoral axis in the 30 cases of normal pelvis.Different physicians measure and classify the 60 cases of femoral neck fracture using modified method and the traditional method in blind method, and then statistical analyze the results.The modified Pauwels angle classification fractures can obtain more accurate and reliable typing in the femoral neck fracture and has certain guiding value.