Objective To investigate the cognizance of fatty liver risk factor and general knowledge on heal liver patients,then to provide evidence for its prevention and treatment.Methods 1 384 cases came to sanatorium,304 were chosen from those who were diagnosed as fatty liver by B ultrasonic,and 1 080 were chosen as control group from those who were not diagnosed as fatty liver.Satistic analysis was undertaken between two groups.Results Among 10 items,9 were found significantly less cognized in fatty liver group than in the control group.Conclusion Fatty liver patients are lack of fatty liver related knowledge,and less cognizance of fatty liver and its harms.Education and popularization of fatty liver related knowledge in the sanatorium personnel to prevent the prevalence of the disease.