This study analyzed the second, fourth and seventh year data of the Gyeonggi Education Longitudinal Study to find out the factors influencing teachers professional capital. The same panel (elementary 4 panel) data were used, and the differences of primary, middle and high school teachers were compared according to the time points. As a result of analyzing the data, first, when looking at the difference of professional capital according to gender among the personal characteristics of teachers, the professional capital mean of female teachers was slightly higher than that of male teachers, and the higher the final education level, the higher the professional capital mean. Second, among all the school characteristics, the level of professional capital of teachers working in innovative schools at all school levels was higher than that of general schools, especially in middle and high schools. Third, as a result of analyzing what factors affect the professional capital of teachers by school level and analyzing the influences, elementary school teachers showed that the current school satisfaction and class improvement participation variables had a positive effect on professional capital among nine independent variables. In the case of middle school teachers, three independent variables, including current school satisfaction, participation in class improvement activities, and job satisfaction, showed a positive effect. Lastly, high school students were female teachers, and teacher satisfaction, present school satisfaction, and class improvement activity participation variables showed a significant level of static influence. Through these research results, it was confirmed that the process variables of the teacher s professional capital, in particular, are the main influencing variables in the teacher s professional capital, and suggested as policy implications.