Application In APP Interface Design For Senior

China National Economic and Social Development Five-Year Plan proposed to actively respond to the aging population, to promote the balanced development of population. Aging trend is an important issue in our current society. Update the concept of social development and make the elderly lifestyle has undergone enormous changes. Today's elderly have a mentality of younger, more willing to invest in modern information life, enjoy the convenience brought by the information revolution. Phone as essential personal devices of modern life, and even in young adolescents have extensive penetration of smart phones is its good experience and a variety of applications become the mainstream of the young market. However, the current mobile phone design for the elderly has become lag, although the function of the so-called feature phones is not simple to use, but difficult to operate the smart phone convenience. Design a true smart phone APP interface for use in the elderly, and allow them to enjoy the convenience brought by technology. This is the starting point of this paper.This issue features from older age groups starting to user needs as the starting point for smart phones as the carrier, to middle-aged health monitoring platform, SOS distress system as the main innovation. As envisaged in the elderly for their mobile phone products, enhance and improve the quality of life of elderly people and promote the healthy development of the elderly physical and psychological, to better meet the needs of daily life for an aging society to do and ready to become the focus of this study.Through user interviews, questionnaires, three methods are low-fidelity prototype user interface test method gradually build interface model suitable for the elderly smart phones.