Most of cities in our country have been faced some problems such as unplanned and physical disruption. These studies have been shown that the recent physical expansion of the city is because of the natural growth of the population, immigrations from villages, and finally exceeding to farms and garden that have been located around the cities. Despite, one of the important reasons of instability in our cities is abandoned wide areas or with none-urban landuse. This fabric has been led to instability in some factors such as economic, social, and physical in our cities. These spaces are instable in natural disasters such as flood and earthquake. Also don’t provide basic needs of residents. In this research by approaching of infill development, was studied capacity of Borujerd city in order to appropriate guidance of urban development. Research method: the kind of this research is applied and the method of research is "descriptive – analytical. Also data collection method has been done library (using of books, papers, internet and etc) and field (questionnaire, view). Result: infill development in borujerd is possibility .also preparation of housing and physical- spatial development is possibility.