The aim of this study is to evaluate the relationship between different types of social capitals (within and outside the group) and happiness. The statistical society of study includes all students of Islamic Azad University Kerman branch (16 403 students) for the academic year of 2013-2014 that 400 students are selected as a sample size. In this study, oxford questionnaire is used in evaluation of happiness. Theoretical framework of this study is formed based on the ideas of Max haler and Markaz hadler, Belbum and Barhir, Shinez and Bergezma and above relationships were fitted into the path diagram using Amos17 software. The results indicate that outside the group social capital has no direct effect on the feeling of happiness, but this variable affects happiness (Standard beta coefficient equal to 0.141) based on the impact of hope for the future. The spirit of giving and receiving criticism has about the value of 0.19 influence on happiness and it is affected by interest to others and life satisfaction that they affect 0.16 and 0.291 respectively to it. Other relationships of influential variables have been identified in the research.