The purposes of this study was to understand the emerge of the main causes and the solutions of the social conflict problem in three provinces southern of Thailand that becomes the part of interesting issue in Asia region to figure out about the reasons why Thai government did not successfully to manage the problem in three provinces southern of Thailand including Yala, Pattani, Narathiwat and some district of Songkhla. This undergraduate thesis is trying to analyze the basically of the real situation and the main causes of social conflict problem in three province and some districts of southern Thailand that will include 3 factors (1) the factor of diversity were consists of cultures, attitude, language and religions (2) the factor of government management structures including the policies form, laws, and economic system (3) the factor of opposition or individuals group such as group of violence or discrimination, interest group, interference for benefit group. The social conflict problem in three provinces southern of Thailand is solved by peaceful ways, which does not use violence, but using intellectual, analysis, confrontation and understanding each other for sustainable and permanent solution and giving opportunity to both parties combination to solve the problem together.