Keywords:
• senior citizens/
• behavior/
• barrier-free design strategies

Abstract:From the ergonomics and industry design ideas, we know that the product design should embody mutual relations of human-machine-environment when we design the product, to ensure the achievement of the performance of human-machineenvironmental system optimization. Targeted at different user groups, we design consumer -oriented products. As socially disadvantaged groups, due to older people's life changes in the environment after post -retirement, senior citizens' behavior characteristics change accordingly, in which process the physical and cognitive abilities gradually degenerate, and it is difficult for them to accept new things. When they operate relatively complex product, they feel difficult and puzzled. The key to solution is a reasonable accessibility product design strategy that is barrier-free for older people. This paper presents that there are the particular location strategy of the consumer with the function, the strategy of human-machine interface and visual information optimization, the design strategy of industry standards and standardization, the strategy of selection materials, the safety design strategies and the design strategy of cutting down protect life cycle cost. These methods can improve comfort for the older people, and enhance product quality.