By that effect, the committees of University of Moral and Political Science during that era such as Professor Direk Jayanama, Professor Duen Bunnag by the leading of General Mangkorn Phromyothi as director and Professor Vijitr Lutitanon as the secretariat had agreed to establish the "Additional Regulation of the separation of studying into 4 faculties and the specified the academic session and exam 1949" and that affected to the establishment of Faculty of Law, Accounting and Commerce, Political Science and Economics in 14 June 1949. In the first period of the establishment of Faculty of Political Science, the first dean of faculty is Professor Direk Jayanama and another curriculum drafting committees; Professor Serm Vinijchaijul, Professor Thawee Reangkam, H.H. Princess Prem Burachat, H.S.H Luksanalert Chayangkul, Professor Dr. Puey Ungpakorn and Dr. Yuad Lertrit had comparative study over the various foreign universities curriculum such as London School of Economics, Harvard University. By the academic supporting of the expert of Fulbright Foundation that coming to Thailand in that period. After that the studying of political science have been change time by time.