This study was to review motives for caregiving according to sex of caregivers and relations to their old adults. Specific goals of the study were 1) to analysis differences in caregiving motives (obligation and intimacy) according to sex of caregivers, 2) to analysis differences in caregiving motives according to relations to their old adults(own parents and spouse`s parents), and 3) to analysis differences in caregiving motives according to interaction effects of sex of caregivers and relations to their old adults. Data for the study were gathered from 382 married caregivers. Main results were as follows: First, the study showed that intimacy as motive for caregiving was more important than obligation. Second, It also revealed that female caregivers got higher score in both emotional and instrumental caregiving consciousness than male ones. And, male caregivers got higher score in intimacy than female ones. Third, caregivers to support spouse`s parents were high in obligation consciousness. On the contrary, caregivers to support their own parents were high in intimacy consciousness. Fourth, as a result of analyzing interaction effects between sex of caregivers and relations to old adults, male caregivers were high in score of emotional caregiving consciousness when they supported parents-in-law, but female caregivers were high when they supported their own parents. Fifth, the second results of analyzing interaction effects between sex of caregivers and relations to old adults showed the same pattern as in emotional caregiving consciousness. Finally, both of male and female caregivers were higher in intimacy with their parents than spouse`s parents. That was more easily found for male caregivers than female ones. Namely, intimacy for their own parents was higher in male caregivers than female ones, but intimacy for spouse`s parents was higher in female caregivers than male ones.