In order to explore the relationship between mental toughness and athlete burnout,as well as the mediating effect of coping style,a sample of 483 active athletes were recruited to complete sports mental toughness questionnaire, coping inventory for competitive sports,and athlete burnout questionnaire.The result indicated that mental toughness negatively predicted the athlete burnout.Coping style partially mediated the relationship between toughness and athlete burnout.The mediating effect accounted for 6 6% of the total effect.This suggested that the coping style was a more prominent factor of...