The use o f computer in the desig n of plane const ruct ion, especially of the mechanical deformat ion and general symmetr y, is stated in this paper. By use of the advanced science and technolog y, the desig n of plane const ruct ion can produce an expected or stochast ic ef fect . It enriched the thought so f desig n and improved the desig n quality. Some symmet ry means and graphics ar e listed in this paper on g eneral symmetry .