The purpose of this study is to analyze child care teacher's job execution and the job satisfaction for the improvement of child care teacher's professionalism. 275 child care teachers working in Seoul, Inchon and Gyeonggi participated in this study. For analyzing the child care teacher's job execution and satisfaction, the questionnaire was composed on modified and supplement to study of Heui Yeon, Shin(2005) and Hyun-Mi, Kim(2005). The result of this study was as follows. First, daily parenting activity was the first task of the main child caring and cleaning classrooms was the highest task of the child care supporting. And in tasks of management, attendance book administration was the first. Second, job execution in tasks of child care support was different according to teacher's educational background, the type of facilities, and age of the child in charge significantly. In tasks of management, job execution was different according to the type of facilities and age of the child in charge, too. Third, job satisfaction for child care teacher was low. According to teacher's personality variable, the difference of job satisfaction was significant. In addition to, the degree of satisfaction of teachers in welfare benefits was different significantly according to teacher's educational background, the type of facilities and age of the child in charge.