The purpose of this study was to examine differences in multicultural early childhood teaching activities according to the general characteristics of early childhood teachers, to analyze the relationships and effects of early childhood teachers’ happiness, variables of attitudes toward the teaching profession, and variables of multicultural teaching, and ultimately to identify variables related to early childhood teachers that explain multicultural early childhood teaching activities. For this study, 270 teachers in charge of young children from multicultural families at early childhood education institutions were sampled. When the ‘age’ variable, which might affect multicultural teaching activities, was excluded and the relationships among early childhood teachers’ variables as independent variables were analyzed, happiness and obsessive passion were found to have an effect on multicultural teaching activities. These findings suggest that early childhood teachers’ happiness and passion for teaching needs to be enhanced as an effort to set the direction of multicultural education fit for the characteristics of Korea in the field of early childhood education, where the foundation of culture is laid and prejudices are easily formed.