Objective To investigate the effect of occupational lead exposure on blood pressure and provide supportive evidence of health protection on lead-exposed workers.Methods 612 workers(452 lead-exposed workers,160workers as control)were recruited in the battery factory.The blood lead concentration and blood pressure were detected by occupational health examination and biological Objective To investigate the effect of occupational lead exposure on blood pressure and provide supportive evidence of health protection on lead-exposed workers. Methods 612 workers (452 ​​lead-exposed workers, 160workers as control) were recruited in the battery factory. The blood lead concentration and blood pressure were detected by occupational health examination and biological