Public participation is deemed a main principle of Good Governance. To ensuretransparency and acceptance by the public, public sectors must allow people toexpress their ideas and jointly make decisions in their administrations. Thailand hasconcentrated on this principle as seen in the Constitution of the Kingdom of Thailand.The State is required to be committed to the promotion and protection of the rightsand liberties of citizens to participate, together with other legislation relating to publicparticipation in policy specification, political decisions, economic, social, and politicaldevelopment planning as well as examination of state power usage at any levelaccording to Section 87 (1) (2) and (3) of the Constitution of the Kingdom of ThailandB.E. 2550. However, there is no Act defining the criteria and procedures for theparticipation of the people. There are only Rules of the Prime Minister on the creationof governance and social good B.E. 2542, and the Draft of Public Participation Act.B.E. ...., which the National Economic and Social Advisory Council and Research andConsultancy Institute drafted by Thammasat University and proposed to the Cabinet.Also, there is the Draft of Public Participation in the Process of Public Policy ActB.E. ...., which King Prajadhipok’s Institute drafted. Since these two drafts are unclear,this research will study and analyze the issues in the drafts to come up with anappropriate solution. Moreover, for the best benefit to citizen and nation, buildingunderstanding on public participation by Thai citizens must be done simultaneouslyand urgently.