Abstract: Objective To study the relationship between job burnout and job satisfaction,social support among workers exposed to coal dust.Methods Totally 2 055 workers exposed to coal dust were investigated with questionnaires of Maslach Bunnout Inventory-Genenal Survey(MBI-GS),job satisfaction and social support.Results The mean MBI-GS scores were 8.99±7.93 for exhaustion,4.84±5.74 for cynicism,and 14.73±11.82 for professional inefficacy.Job satisfaction and social support had obvious negative correlations with job burnout(P < 0.01).The predictor variables of exhaustion included extrinsic satisfaction(=-0.250,P <0.01),support application dimension(=-0.214,P <0.01),intrinsic satisfaction(=-0.219,P <0.01),and objective support dimension(=-0.038,P <0.05).The predictor variables of cynicism included extrinsic satisfaction(=-0.271,P <0.01),support application dimension(=-0.135,PP <0.01),intrinsic satisfaction(=-0.187,P <0.01),subjective support dimension(=-0.089,P <0.01),and objective support dimension(=-0.053,P <0.05).The predictor variables of professional inefficacy included support application dimension(=-0.161,P <0.01),objective support dimension(=-0.078,P <0.05),subjective support dimension(=-0.068,P <0.05),and intrinsic satisfaction(=-0.068,P <0.01).Conclusion The job burnout of workers exposed to coal dust could be relieved by the improvement of job satisfaction and social support.