Objective To explore the difference of risk factors to depression between different nationalities, the relationship of stressing life events, cognitive emotion regulation, and depression and suicide ideation were studied by correlate and regression analysis. Methods 126 patients with depression diagnosed by CCMD-III,55 minority nationality and 71 Han nationality patients,completed life events questionnaires,cognitive emotion regulation questionaire(CERQ) and HAMD. All the parameters be analyzed by SPSS 17.0, and correlation analysis and stepwise regression analysis be employed to analyze the relationship between the parameters. Results Negative cognitive emotion, stressing life events and suicide ideation related positively to depression, while positive cognitive emotion related to depression negatively(r self-blame=0.599,r acceptance=0.527,r rumination=0.484,r catastrophizing=0.618,r LES=0.649,r suicide ideation=0.482,P<0.01;r positive refocusing=-0.476,r planning=-0.0254,r positive reapprasial=-0.363,r putting into perspective=-0.492,p<0.01);stressing life events and negative cognitive emotion and depression related positively to suicide i-deation(r LES=0.482.r self-blame=0.438,r acceptance=0.338,r rumination=0.378,r catastrophizing=0.457,r depression=0.724,p<0.01) , and positive cognitive emotion related negatively to it(r positive refocusing=-0.319,r putting into perspective=-0.326,p<0.01). The outcome of correlate analysis was similar in different nationalities. Stressing life events and catastrophizing and other-blame contributed more to depression than other factors in minority nationality group, and only the former two factors contributed to depression in Han nationality group. In both two groups, depression contributed more to suicide ideation than others. Conclusions Stressing rife events and negative cognitive emotion regulation have a significant effect on the development of depression, and the severity of depression is a critical factor to suicide ideation. There is no significant difference about above outcome between different nationalities.