The number of elderly people is gradually increasing. As we age, sarcopenia appears due to the gradual loss of muscle strength. Not only cause the inconvenience of life, but also became one of the important causes of falls in the elderly. Therefore, we hope to reduce the probability of falls by solving the problem of sarcopenia in the elderly. In order to improve the willingness of the elderly to exercise, we combine games with physical equipment to design an exercise bike with safety. Not only make exercise no longer to be boring and passive, but also let elderly people exercise more effectively.