This study purposed to survey in-home child caregivers efficacy and to provide basic materials for improving the quality of in‐home child care services. The subjects of this study were 239 in-home child caregivers sampled from 25 institutions that were providing child carer support services in Seoul. The major results of this study were as follows. First, in-home child caregivers efficacy(self‐efficacy, efficacy of child care and teaching, vocational self-efficacy)was different according to their academic qualification and activities career. Second, significant correlations were observed among in-home child caregivers self‐efficacy, efficacy of child care and teaching and vocational self-efficacy. Self‐efficacy was in a high positive correlation with efficacy of child care and teaching, and in a positive correlation with overall vocational self-efficacy and its sub‐factors (hygiene control, dietary guidance, first aid, play activity, emotional support, and document practice). Efficacy of child care and teaching showed a relatively high positive correlation with vocational self-efficacy and a positive correlation with all of the sub‐factors of vocational self-efficacy. Third, self-efficacy and efficacy of child care and education were influential for vocational self-efficacy.