Starting from the function of toys for the aged,it analyzed the important base role of cognitive.Based on the information processing of cognitive behavior,it analyzed the related cognitive psychology factors involved sensory organ function,processing speed,working memory and inhibition,and also analyzed the effects of cognitive habits and living environment.It drew the conclusions that elderly cognitive was declining with age and characterized by the declining in abilities of information perception,processing and anti-interference,and decreasing in the sensitivity of information.Based on this,it proposed three strategies of toy design for the aged: according with the cognitive habits,easy to use,enhancing intelligence tactics.