The purpose of this study was to examine the influence of religious maturity of Christian teachers in child care centers on teacher-infant interaction, emotional labor and emotional intelligence. The survey was conducted on 173 Christian teachers of early-child classes who work in child care centers in Gyeonggi-do province. For the research analysis, frequency and Cronbach’s α coefficient were calculated and regression analysis were conducted. The results are as follows. First, the affective and volitional factors from religious maturity of Christian teachers in child care centers have had a positive influence on the overall teacher-infant interaction. Second, the affective factor from religious maturity of Christian teachers in child care centers have had a negative influence on outward behavior, which is the lower variable of emotional work, and a positive influence on inner behavior. Third, the volitional factor from religious maturity of Christian teachers in child care centers have had a positive influence on perception of self-emotions, perception of others' emotion, emotional application, emotional control, and emotional intelligence overall.