It has been encountering with large modifications and developments during recent decades and it makes large developments at Rey & Islamshahr regions. As the habitation areas as shaped in different dimensions. Thought it can investigate the implicational structural at large scales even at littler scales too. Nevertheless the essential applications of living areas on over coming life need such habitation and it has been discussed occupations, having social relations with others, education and training. The kind of search in this study it is introductive and analysis and it was applied of library and curcuma methods. Also it was applied of Top sis model. The findings of study indicate that economical social and structural are in the rates from first to second and it has the most effective role at modification of environmental and implicational of Rey and Islamshahr habitation areas during Tehran mega city. At last it is evaluated as the final indicates at environmental and habitation areas.