The present a aging rate is 20.8%, And, it is expected that one person in three people becomes a senior citizen in 2035. In such a social background, The senior citizen's healthy promotion is needed, and the development of the welfare equipment that assists it is demanded. Therefore, We are researching what The walking assist device is developed as a welfare equipment to assist walking. Especially that The examination of Power consumption simulation in the method and the urban area of the power support of the walking assist device and examinations of the Capacitor device Introduction.