Abstract
Due to the rapid increase of the elderly, many nursing homes have been constructed in recent decades in Japan. At the beginning, the primary focus was on the 'quantity', that is, to build as many nursing homes as possible. But people noticed that the environment was so poor that it was not appropriate for the elderly to live out their last days. Now, improving the 'quality' is the essential and urgent issue. So the environment is required to enhance QOL of the elderly. The planning should be based on the point of view of the elderly themselves. But it is difficult for them to answer the questionnaire and interview. This paper introduces the behavior tracking survey as a way to assess their needs.