The Purpose of this study is to build the effective professional development system for up-grading teachers' capability in Korea. The specific purposes are as follows: first, to find out the meaning of effective professional development system. second, to review the conditions of building the system of teachers' professional growth on teacher policy; third, to analyze the direction for extending teacher's capability and enriching professional ethos from the standpoint of the sound competition: and then finally to provide major discussion points and tasks on teacher capability enhancing system. The study is designed basically with normative approach, literature reviews and contents analysis methodology, and reviews the treacher policy models. From this methodology, the following conclusions can be provided: first, the direction of building of that system should be transferred from change of individual unit to systemic change, from negative strategy to positive strategy, from structural competition to constructive competition, the culture of promotion to the culture of professional development, and from individual ability to capacity development of organization. The major tasks are summarized as follows: preparing of the initiative teacher in knowledge based society, developing competence to lead the networking system of learning, strengthening of capacity of educational system, establishment of accountable system, and enhancing the quality of teachers with empowering teachers.