Objective:To investigate the personality charcteristics of middle school backbone teachers.Methods:271 middle school backbone teachers were tested with 16PF.Results: The backbone teachers group got higher scores in activeness,excitement,sophistication,hervousness,and anxiety factors,and lower scores in experiment and independence factors than the normal group.The female teachers are more sociable,subtle and imaginative,but the male teachers are more independent.Conclusion:Middle school backbone teachers showed some unique personality characteristics.