Based on the latest tracking survey data of BCSPS in 2011, an in-depth analysis of the happiness condition is carried out. Using the multiple linear regression model, the influencing factors of the capital college students' happiness are analyzed from the dimension of individual, family, college and campus life. The results show the happiness level of capital college students is very high and over 30% of their score are 90 and above. The happiness level of female students is significantly higher than that o...