Objective      To investigate the relationship of job burnout with emotional labor and role of job characteristics in medical staffs from army hospital

and the role of emotional labor and the role of job characteristics in prediction of job burnout.       Methods      By cluster sampling

580 medical staffs from a Class-AAA army hospital were enrolled in this study. They were given a survey including general survey and Chinese Maslach Burnout Inventory (CMBI) questionnaire

emotional labor questionnaire and job role characteristic scale. CMBI questionnaire included emotional exhaustion

depersonalization and diminution of personal accomplishment. Work role characteristic scale contained role conflict and role confusion

emotional labor scale contains surface performance

natural phenomenon and deep performance.       Results      Of total 544 received surveys

511 answered questionnaires were available. Emotional exhaustion was positively correlated with surface performance

deep expression

and role conflict （r=0.260

0.074

0.285

P0.05

P0.01）. Depersonalization was positively correlated with surface performance （r=0.240

P0.01）

but negatively correlated with deep expression and natural expression（r=-0.153

-0.181

P0.01）. Diminution of personal accomplishment was negatively correlated with deep expression and natural expression（r=-0.247

-0.183

P0.01）

but positively correlated with role conflict and role confusion（r=0.094

0.247

P0.05

P0.01）; Surface performance

deep expression and role conflict could jointly predict 12.6% variation of emotional exhaustion. Surface performance

deep expression and natural performance could jointly predict 8% variation of depersonalization. Role conflict

role confusion and deep expression could jointly predict 12.6% variation of diminution of personal accomplishment.       Conclusion      Job burnout is correlated with emotional labor and the role of job characteristics. Emotional labor and the role of job characteristics can predict job burnout.