Objective To explore the prevalence rate,influential factors and the way of prevention of depression among college students,so as to provide the scientific basis for preventing depression.Methods Four hundred and twenty - eight college students aged from 17 to 25 years were chosen from freshman to graduate by cluster sampling methed,and they were investigated with the influential factors of mental health questionaire and the self- rating depression scale(SDS) inventory. Results Altogether 50.24% students in the university suffered from depression,among them boys were 50.00% and girls 50.54 %,m...