This research aimed 1) to study and find a solution to solve the problem of the quality assurance management of graduate diploma in teacher profession by Participatory Action Research 2) to develop the quality assurance management of graduate diploma in teacher profession by Participatory Action Research. In this research, purposive sampling was used as a sampling method by having 178 of student teacher's professional experience, 162of teacher supervisors, 162 of school Administrators,162 of College of Asian Scholars teachers and 6 of curriculum teacher as a sample group. The instrument used in the study included a questionnaire with a rating Scale (5 levels).This questionnaire was separated into 6 parts; first part was the general information of respondents, second part 1) 12 points of Regulation Control 2) 3 points of graduate 3) 8 points of student 4) 9 points of teacher 5) 13 points of curriculum, instruction and student evaluation and 6) 3 points of supportive learning materials. Research results 1).The study of condition and problems of the quality assurance management of Graduate Diploma Program in Teaching Profession by Participatory Action Research of College of Asian Scholars was conducted by using questionnaire to analyst both internal and external factor for further using for management planning of Graduate Diploma Program in Teaching Profession by Participatory Action Research. Point 1.Regulation Control: in overview the problem level was considered as low, Point 2. Graduate: in overview the problem level was medium, Similarly, Point 3. Student: in overview the problem level was also medium. Point 4. Teacher : in overview the problem level was considered as high. Point 5.Curriculum, instruction and student evaluation and Point 6. Supportive learning materials were considered high. 2) Conclusion the development of management planning of Graduate Diploma Program in Teaching Profession by Participatory Action Research of College of Asian Scholars. According to the operation of the quality assurance management of graduate diploma program in teaching profession of college of Asian Scholars by participatory action research. First cycle was planning, implementation, observation and reflection and Second cycle created operation plan and operation calendar, implementation and reflection and according to this reflection one project has to be adjusted and the discussion meeting was arranged to support curriculum teacher for academic position evaluation.