The purpose of this study was to explore the change of construction of knowledge about 'Integrated Early Childhood Curriculum management'. The subjects are 17 kindergarten teachers They composed concept maps on 'Integrated Early Childhood Curriculum management' three times. And they were interviewed about these concept maps and the causes of knowledge change two times after composition. The result of this study shows that first, the centrality score and specificity score changed. Second, in respect of knowledge contents, the most frequently used concepts were '5 Curriculum Area' and 'activity' before practicum, and ' 5 curriculum area' after practicum. 'Activity' was most frequently used in the concept map composed at first career period. Finally, it turned out that 'the characteristics of kindergarten that offered practicum', 'actual experience of teaching children', 'recent learning', and 'participation in research' influenced knowledge change after practicum. And it was 'the characteristics of kindergarten that the teacher work for', 'difficulties in adapting to the teaching job', and 'the integration of theory and practice', that influenced knowledge change at first career period.