The purpose of this project was to investigate alcohol consumption, cigarette smoking and family disease history in the family members of normal and hypertension disease, excluding patients themselves. Mean daily alcohol consumption in family members of hypertension disease patients was significantly higher, especially in the male with thirties, forties, and fifties, than those of normal subjects. Mean daily cigarette smoking in family members of hypertension disease patients was also significantly higher, especially in the male with forties and sixties than those of normal subjects. Cases of hereditary family disease was significantly higher in the family members of hypertension disease patients than those of normal subjects. Especially, a degree to be attacked with cerebrovascular disease was very higher in the family members of hypertension disease patients than normal family.