In this study, we considered the impact of awareness of the knowledge of developmental disabilities and getting social support on the influence of nursery stressor on burnout. 191 nursery teachers (2 men, 188 women and 1 unknown, 20-80 years old) of this questionnaire survey completed the instrumental support scale, knowledge of developmental disability scale, scales of nursery stressor, the sense of burden scale in special needs education and the burnout tendency scale. The results of hierarchical multiple regression analysis showed that the state of imbalance in knowledge of developmental disorders instrumental support strengthens burnout. On the other hand, it was suggested that when both sides are high, even if the burden of childcare requiring special consideration is great, it can be overcome, and it prevents challenges and a sense of accomplishment from decreasing for childcare.