There have been remarkable changes in circumstances for childcare teachers and their mental health has become a great issue. In this study, we focused on resilience: the resistive power to stress, and discussed the changes in resilience of childcare teachers, in relation to the experience. The relationship between childcare teachers' resilience and their mental health was also examined. The results revealed that resilience of childcare teachers rised as their experience increased. In particular, it was identified that their selfefficacy, one of component of resilience, rised as their experience increased. In addition, a positive correlation was confirmed between resilience and mental health. These results suggest that an approach to improve childcare teachers' self-efficacy might be effective as a strategy to maintain their mental health.