The objective of this thesis is to study outcome of suppressing terrorism of the police officers in Yala, Pattani and Narathivas and factors affecting the performance of police officers in suppressing terrorism. This research is a field research. Questionnaires were used in data collecting from the sample group of 269 police officers in Yala Pattani and Narathivas. In data analysis percentage, mean and Chi-square test were used to study the relationship between independent variable and dependent variable. The differentiate value is at 0.05. The results of research present that the factors affecting the police officers' performance suppressing terrorism in Yala, Pattani and Narathivas are resident, religion, ability in using Malayu language and physical features of land.
