Face the aging society, the elderly living alone has increased. In the future of an aging society, it is important that the elderly to maintain the initiative in activities. And, it is necessary to technology that supports it. It is a dementia in one of the aging society problem. The elderly with a forgetfulness, mild cognitive impairment (MCI) and mild dementia has been shown to perform behavioral that independence by information support. Therefore, we developed a life support system using information support robot. Additionally, it is shown when it is necessary to change the communication method by the difference in cognitive function level. In this report, we develop the introduction method of the information support robot for the elderly with a forgetfulness, MCI and mild dementia, and were conducted introduction experiment of information support robot to the elderly. As the result, it was confirmed that information is transmitted to the accurate to the elderly. However, the decision of cognitive function level is required expertise. For this reason, it has been shown that we require consideration of method that everyone can be a decision easily.
