The femoral head pain should do imaging examination, such as X-ray examination, CT examination, magnetic resonance examination and so on. 1. X-ray examination: it is one of the most important examination methods in orthopedics, which can be used to determine whether there is any lesion in the femoral head area and the progress of the lesion, and to clarify the location, shape, size and nature of the lesion. In addition, more obvious ischemic necrosis of femoral head can be found. 2. CT examination: It can observe the femoral head from multiple planes, so as to find out the small lesions in the early stage of femoral head and its scope, and also can find out the changes of the joint capsule and joint cavity. In addition, it can detect early ischemic changes in the femoral head and hidden femoral head fractures. 3. Magnetic resonance examination: It is an effective early diagnostic method, which can find some early lesions that cannot be clearly defined by X-ray or CT examination. For ischemic changes of the femoral head, MRI is a very sensitive examination. If there is any abnormality in the results of imaging examination, it is recommended to consult a doctor in time to identify the cause of the disease and carry out targeted treatment or therapy.