Fractures of the neck of the femur in children are so rare that none has a great experience of them. Therefore the literature is scanty and no detailed study of a large series of cases can be found. Generally there were several differens between femoral neck fracture of adult and child. Those are rare incidence, the mechanism of fracture, different blood supply of femoral head, difficulty discision of definitive treatment and high incidence of complications. In this report, we presented 4 cases. One of them was the dispiaced fracture and was treated with conservative method. The other 3 cases were the displaced fractures and were treated with operative method. Relatively good results were obtained.