Social capital is a huge conceptual that today in the analysis of social-economic, raised on rural development. The purpose of this paper is to show the role of social capital in rural development. The method is descriptive-analytical and data gathering tool was a questionnaire. The study, in 1762 the head of household, the village of Hasan Abad, which sample surveyed 210 households Review was taken. Data analysis in the software SPSS, and structural equation modeling (SEM), is done. The first two models, factor analysis, two sub-scales for measuring social capital, developed and validated. Finally, the impacts of observed variables, and binary components derived from them, the main hidden social capital and the relationships between them, with the help of a structural model of confirmatory factor analysis (CFA), three second order factor was analyzed. The results of the fit, and reliability both measures of social capital, and goals, and the second three-factor model for studying social capital, based on the data gathered. Participation and social trust, respectively, to the 65/0 and 78/0, had an impact on social capital. The results can, in rural planners, to improve social capital and, ultimately, contribute to the development of rural areas.