The school stadium becomes open to the society, along came into being the possibility of dangers and injury accidents resulting in the equipment of the stadium, physical situation of the person involved, the characteristics of a particular activity and the public order. When the school stadium is open to the public, all are the main body of personnel security protection including the society, the school, the third party and the person involved. Under such circumstance, the possible accidents and injuries should be applied to the fault duty principle of the law of tort, instead of the doctrine of assumption.