The Japanese population continues to age rapidly. It is predicted that by2025, the population of elderly people aged 65, or over in the total Japanese people will rise to 30% over. It is necessary to support elderly person, a person that is in a condition of need for care, by a care service. The care service is by the care staff with the specialized technique, qualification and hospitality. It is to offer a care service of the high quality to the elderly person This is to study about the following points: (1)Welfare information and choice of care service (2)Quantity and quality criteria of the care service (3)quality of the care service and it’s valuation