Abstract
The living environment is of great significance to human health. But the suitability of human settlements in Nanjing was not clear. In this paper, an indicator system was constructed which contains four aspects (society- economy conditions, natural environmental quality, public infrastructure and environment resources protection). An evaluation model was established for assessing suitability of human settlements in Nanjing. Increasing proposals on optimizing the human settlement environment of Nanjing are raised to assure the urban sustainable development.