This paper wants to study the measurement of social capital of the Payam Noor University in southern Khorasan. It also tries to increase the role of social capital through participation and membership in different groups. Thus, Two types of hypotheses were in micro and macro levels analyzed. More than 329 students were randomly selected and (F and T) coeficeints show that variables like gender, marriage, place of living and place of birth had no effect on social capital, but variables like social classes, family relations, individual resources, educational prestige, social interaction had more influence on the social capital among the students.