Abstract: This paper chiefly discusses the establishment of the velocity surface and the acceleration surface of the whole deformation area.At the same time,it also discusses models with which to get these two surfaces.These models include the indirect model based on the multiple successive regression and the direct model.With these models,we gain a panormatic view of the whole deformation area in evaluating deformation.It also become convenient to get the deformation of any point within the deformation area during any surveying period,as long as the plane coordinates of the point are known.