The purpose of this study is to identify health promotion behavior, self-efficacy and role stress of family caregivers who care for hospitalized cancer patient, The results would be used to provide the necessary basic data for promoting healthy behavior of the family caregivers to the cancer patient. The results were as follow : 1) The level of health promotion behavior was significantly different depending on the existence of care givers religion and type of help from family members. There was a positive relationship between the performance level of health promotion behavior and perceived health status or age. There was a negative correlation between the performance level of health promotion behavior and time cared for. 2) The level of self-efficacy was significantly different depending on gender and if the subject was employed. There was a positive relationship between perceived health status and intimacy with patient. 3) The level of role stress was significantly different in genders and relationships with patients. 4) There was a positive relationship between health promotion behavior and self-efficacy.