Objective To study the mental health condition of undergraduate students from different departments in military medical university,and provide evidence and guideline for education before and during exercitation.Methods 140 medical undergraduate students and 90 nursing undergraduate students were surveyed by the questionnaires of PSSS(Perceived Social Support Scale),SES(Self-Esteem Scale)and GWB (General Well-Being).The results were analyzed by SPSS 13.0.Results Self-esteem,social support and general well-being of undergraduate students from different departments were normal,were>30、>50 and>60.respectively;scores of"support from family"and"control of emotion and behavior"were significantly different among undergraduate students from different departments(P<0.05);there was no significant difference in scores of other sections among undergraduate students from different departments.Self-esteem had no obvious relationship with social support,while had relationship with well-being.Conclusions The military medical university should emphasize the edueation before exercitation,alleviate the anxiety of graduate students and strengthen the management during exercitation to prevent accidents.