This research mainly studied the risk factors of depression among college students, and a Logistic regression model was built to predict the probability of how much is the chance that a student would get obvious depression after 6 month. The difference with previous studies is that we tried to build a multi-factors model to predict depression in 6 months, and also to see how these factors affect depression. Firstly, we choosed 13 risk factors as below:population data(sex, major, grade, economical condition,...