The manifestations of femoral neck fracture necrosis are individualized, mainly pain in the groin area or the deep side of the hip, and limitation of hip joint movement. The destruction of blood supply of femoral head caused by femoral neck fracture is one of the most important causes of ischemic necrosis of femoral head. Patients with femoral head necrosis may have pain in the groin area or the deep side of the hip in the early stage, but some patients only have pain in the front of the thigh or the knee joint. After the femoral head collapses and deforms, the pain is progressively aggravated, limping, and the normal function of the hip joint will be gradually lost. In the early stage of femoral head necrosis, the activity of the affected hip may be limited. With the aggravation of femoral head necrosis, the side of the lesion can appear inward and flexion deformity, and the daily activities of the hip joint can also be significantly restricted. The diagnosis of femoral neck fracture should be promptly standardized treatment to avoid adverse consequences.