This research aims to find out how The Malaysian Government roles on Peace Process In South Thailand At 2005-20016. The data in this research is secondary data from books, website, and other sources. And the technique of analysis of this research is qualitative analysis techniques. Concept or theories used in this research was the Theory of Conflict Resolution. The results showed that in the peace-making efforts, Malaysia became a facilitator in the peace process in South Thailand and managed to bring the government of Thailand and southern Thailand rebels at the negotiation. In the peace-building efforts, Malaysia cooperate by making MoU and 3E Manuscript with the Thailand government in social and economic development in southern Thailand.