The current research aims to review the concept of Subjective Well–Being (SWB) and its literature and to reveal the factorial construction of the subjective – component in the composite well–being index. This main objective of this paper is studying the factorial structure by using of Exploratory Factor Analysis (EFA) and determination of the relative weight of each factor from factor analysis outputs. To achieve the previous objectives we use a sample of 1500 women from Giza governorate, distributed equally in three regions: (Agouza represents an urban area, Manwatt represents a rural area, Abu Qatada represents a slum area). The results include the (EFA) of confidence in the psychometric measures and the reliability test of (Cronbach's alpha α) for the questions of the questionnaire suggested by the Organization for Economic Co–operation and Development (OECD) on the (SWB) of the sample. The study reached that, the use of the (EFA) of the components of the subjective–component revealed nine factors that explain (69%) of the variation. this is a good percentage.