Objective: Nowadays, happiness has had a considerable importance in a way that has become as one of indexes for improving the societies. when we study the relatioship between students, as the most active and agile class of society, it’s importance becomes twice. Therefore, in this research we try to study the amount of happpiness and the related factors among University of Tabriz students.

Method: The methodology is survey and the population includes the whole students in Tabriz Univrsity in 1389-1390 who were 24000. We choose 378 students as sample hhrough Kookran Formula and stratified random sampling method. The data were analyzed through SPSS 17 software.

Findings: The Findings of study show that social capital, econmical capital and cultural capitals have a direct and meaningful relatiuoship with student’s happiness. The results of regresssion also show that dependent variable, happiness, much more than the other variables has been affected by social trust. In addition , we can refer to social participation, social conformity and cultural capital which have the most affect in explaining the dependent variable. It should be mentioned that the variables entered to model could explain 39% of variance in dependent variable.