In order to meet the requirements of the paper, this paper has been divided into three main parts. The first part dealt with the summary of the content of the theoretical study, The second part dealt with a comparative analytical study of models of the role of the world's elderly people's home to come up with a theoretical methodology of criteria for achieving the principles of design on the homes of the elderly people ,The third part dealt with the practical study of the design criteria applied to an elderly people's home in the Arab Republic of Egypt;  it is divided as follows: