Objectives: Success of all development programs is dependent to social capital. social capital means authority for collective and cooperative use of all sources to responding public goals .Every society need social capital to access economic growth, increasing human and economic capital and decreasing poverty. Outgroup and in-group relations (base of social capital) connect internal elements in society and these relations make society, healthier, more succulent and more tolerant. Every development program needs these elements .This means quality of life (one of indicators of development) is dependent to social capital .Social capital and quality of life are concepts related to development literature and have dynamic links together and other development concepts. Quality of life is a multilateral concept that descript physical, emotional ,social and psych well-being. This concept administer people authority for controlling their life .And this means enjoyment of all aspects of life .In spite of importance of economic, social, environmental component of quality of life, perception of these is very important. We can`t use an universal indicator for survey quality of life because social and cultural conditions are different in all countries. But we can say social capital is aggregate of real and potentially sources that respond to institutional relations and deep cognizance. Social trust, social norms ,social participation and social networks are components of social capital because they can facilitation all social actions. This survey focuses on people of Kerman city for recognizing the level of social capital, quality of life and relations between these factors. Method: This is a survey and data gathered by questionnaire. 384 persons of city population selected from different sections. Method of sampling was multilevel stratification. 384 persons selected from sample blocks randomly. The questionnaire was made by some international indicators and some fore passed researches in Iran and other countries. The results of reliability and validity tests Show this questionnaire is trustworthy. After data gathering data analysis by Spss and Minitab packages. Findings: Results shows 33/8 percent were residents of high sections and remainder were residents of other sections. 52/5 percent of them were females. This survey shows the level of social capital and its related aspects (trust, norm obligation and informal participation) are low and level of some aspects of quality of life that related to personal health was high. But other aspects were on low level. The level of quality of life was related to social capital in every section. Results: Level of quality of life in Kerman city is affected by average of social capital. Low level social capital is explained by limitation of formal participation and norm obligations. Across increasing in levels of social trust, social participation and norm obligations, the quality of life was improved. There is alarm, we cant observe any relation between formal social participation and quality of life because level of formal participation was low. The relationship between two factors was low in poor sections of city but relations were strong in middle sections. Therefore poor section is weak and they need special attentions. The results agree ago findings in Iran and other countries. This research verifies theories about social capital, quality of life and their relationships.