The purpose of this study is to investigate the in-service training of teachers according to teacher expertise development evaluation on the theoretical basis, to inquire operation for the training system, and to present and an professional development plan for the training system. The great interesting of the in-service training system according to teacher expertise development evaluation in 2010 has been a topic for model operation of new teacher's evaluation system in Korea since 2005. Based on literature review, a survey questionnaire of 3 category were developed for distribution to subjects. 1,937 survey sheets were distributed to teacher and educational supervisors, 1,373(70.8%) of which were received and treated for frequency and cross-tab analysis using SPSS WIN. It was also shared among those teachers that a new in-service training system should be developed which would promote teachers to develop professional development in the teaching and learning implementation. The results of the requires analysis for teacher should be shared among trainees and staffs in training centers. The new teacher's expertise development evaluation system will sharply expand the teacher-made in-service training. This study should be operated voluntarily and converted into various training for field experiences, major in-service training rating agencies, cooperative method system of in-service training according to teacher expertise development evaluation. In conclusion, based on the findings, several implications were discussed the model operation of teacher expertise development evaluation.