1、Objective To explore Role of life event, social support, parental rearing style and defense style in occurrence of depression.

2、AIM: To explore the structure validity and criterion validity of defense style questionnaire (DSQ).

3、Objective To explore the relationship of defense style and mental health in student of middle school.

4、There were less mature defense style and more cover up factor in the insomniacs than the controls(P

5、ObjectiveTo explore the clinical characters of stress event, family function and psychological defense style of depressive patients.

6、Conclusion Symptoms' relapses of depression patients on antidepressants maintenance therapy are related to patients' general conditions, life events, social support and defense style.

7、Objectives To explore the characteristics of defense style and the status of psychosomatic health as well as the relationship of them in divers.

8、For normal students, the excessive usage of unhealthy defense style to deal with stressors and emotional conflicts in their life will lead to declining of mental health.