Frame of reference is a symbolized system of material relations,constituted by the dimensions,and it is essentially a system of practice relations. In the interaction of the subject object,the nature and the quantity of the object is shown on the frame of reference with a symbolized state,from which the experience knowledge is obtained,and in the transformation of the reference frame,the theory system of a discipline is determined.Actually,the frame of reference determines the limits of the object world and the scope of human knowledge.