Objective To discuss the internal relations of the physical training behavior and mental health and to provide the reference of improving mental health.Method 508 students of the secondary vocational school in the health were tested by the questionnaire

the data was analysed with SPSS 13.0.Results The scores in the SCL-90 were lower than the national norm（p<0.01）

and the top three psychological problems was the obsessive-compulsive disorder

the interpersonal sensitivity and the hostilities.The level of the mental health of the exercise groups was higher than the groups which did not participate in physical training（F=14.942

p<0.01）.Exercise intensity

mental health were related to many factors of SCL-90（p<0.05 or p<0.01）.Conclusion Participating in the exercise is conducive to mental health

and the training strength and mental health related.