With the influence of the trend of global lower birth rate and aging society, the aged group has been treated as the potential consumer group in the future market. Moreover, scholars in every field are predicting the business opportunity of the elderly will continually go up yearly. On the other side, from the view point of marketing, the research of their lifestyle will help us to discover the market. Thus, this research will be divided into three parts: aging society, elderly industries, and lifestyle. In the end, the target is to locate the critical points among the literatures and to solve those question marks.