The characters of shape memorizing polymer were analyzed and some evaluations standard on it were proposed,such as shape recovered rate,shape fixed rate and shape recovered speed,etc. The shape memorizing function of the EVA plastic had been studied,the results indicated that the EVA plastics can be cross linked with DCP ,and the properly cross linked EVA will have a good shape memory properties, which shape recovering rate and shape fixed rate can be 95% or more. The structure of EVA was also analyzed ...