Abstract: Based on the theories of technology acceptance and subjective well-being， a model was built to explore the factors that affect students smart phone using behaviors. It was found that perceived usefulness， perceived ease of use， attitude and meta-motivation have significant effects on college students smart phone using behaviors， and demographic factors have certain impacts as well. Smart phone using behaviors exert significant effects on college students satisfied utility and subjective well-being. The average daily time of smart phone use is significantly positively related to satisfied utility and subjective well-being， and the years of smart phone use are also significantly positively related to subjective well-being. Given the above results， it was suggested that APPs that have positive effects on subjective well-being should be developed， the share of educational resources should be maximized and the educational management should be implemented effectively.

Key words: college student, smart-phone use, subjective well-being