Abstract: Objective To explore the relationship between mental trauma,social support and the level of self-harmony among the soldiers participating in the rescue of debris flow happened in Zhouqu.Methods Impact of Event Scale(ISER),Social Support Rate Scale(SSRS),and the Self Consistency and Congruence Scale(SCCS) were administrated to 147 rescue soldiers.Results More than 75% of the rescue soldiers had psychological trauma symptoms.Compared with the Chinese soldiers norms,the soldiers had lower level of social support (t=-2.03,P< 0.01) and higher score of self-harmony (t=5.24,P<0.01).The soldiers with different levels of social support had different scoces of alertness(t=-2.69,P< 0.05).Self-harmony was positively related to mental trauma(r=0.306,P< 0.01).Conclusion The rescue soldirers had severe psychological trauma and low level of self-harmony which were effected by social support.