Objective To explore the mediating role of self-esteem between affective property and metal healthy,and then search effective way to ascent juniors' metal healthy lever.Methods 300 juniors were chosen and received PANAS,MSSMHS and SES assessment.Results ①In sequence,study stress,lability of affect,obsession,anxiety and sensitive of interpersonal relationship produced effect on juniors.②There was a significant negative correlation (r=-0.498～-0.314,P＜0.05)between mental health and self-esteem,positive emotions.There was a significant positive correlation(r=0.291～ 0.520,P＜ 0.05) between mental health and negative emotions.There was a significant positive correlation(r=0.337,P＜0.05)between self-esteem and positive emotions.③The degree of self-esteem and positive emotions had an obvious negatively predictable (R 2=0.223) function to the total average of mental health,and the degree of negative emotions had an obvious positively predictable (R 2=0.350) function to the total average of mental health.④ The mediating effect of subordinates' perceived self-esteem between positive emotions and mental health was also validated(ab/c'=0.118) and the negative emotion had no regulation effect on mental health.Conclusion With the help of significant mediating role of self-esteem,affective property can be seen as a predictors of metal healthy of juniors.