This paper performs an empirical study to study the effects of social capital on social contribution for a group of people of 18-year-orl who lived in a city of Meymand/Iran. The survey selects 300 people out of 5026 people based on a two-stage cluster sampling and distributed questionnaire among them. The results are analyzed based on descriptive and inductive terms, which indicate a positive and meaningful relation between social capital and social solidarity. However, there is a negative and meaningful relationship between social opposition and conflict with organizations while there are some opposite relationships among networks of social relationships instead of level of internal group relationships.