This study was focused on the conflict resolution and prevention that is related to the conflict management between fishermen that occurred in Panipahan, Bagansiapiapi, Riau Province. The conflict occurred was the burning of a trawler owned by North Sumatera Fisherman by Panipahan Fishermen. This conflict often occurs from 2000 to May 2018. The purposes of this study are; First, analyzing the roots of conflicts between fishermen that occurred in the waters of Rokan Hilir, Panipahan, Riau; Second, analyzing how to resolve and prevent conflicts in Panipahan Waters. This study is qualitative study by using data collection through observation, interviews and literature studies. The conflict resolution theory, conflict management and realistic conflict theory also a dynamic framework of conflict prevention and resolution are the theories used to support this study. The results showed that: 1. The root of conflicts between fishermen in Panipahan is certain behavior of fishing communities, which are gambling, economic problem and scarcity of resources .The trigger is the use of prohibited fishing equipment and the indecisiveness of the law. 2. Then, conflict resolution between fishermen in Panipahan uses mediation procedure that resulted in an agreement between the conflicting parties. The mediator in this case is security institution, regional governments and the two parties themselves. The content of this agreement is not to be anarchic and no to repeat the mistake in the future. Furthermore, the conflict preventions should be implemented after the conflict resolution procedure. The form of this conflict preventions are socizlization, counseling, patrolling communication with fisheries organization from the provinces and regions and also the cultivation of shellfish.