The competition strictness in the economic field needed the exact strategy to maximising the available potential. As the island area that was surrounded by ocean, the Mukomuko Regency in Bengkulu, had the big potential to be developed especially in the export import activity and the sea transportation. There were 4 port kinds that will be developed in the Mukomuko Regency those are the crossing port, the sea port, the trade port and the fish port. The determination of priority in the port kind and it location that developed immediately must be carried out, so the port that was built could be used maximally. The data collection was carried out with observation and the interview. The variables that was used as the determination criterion of priority in the port development was marine aspect, fisheries aspect, transport aspect, layout aspect and environment aspect. The research results showed that location in Mukomuko more appropriate for the crossing port, the location in Bantal was more appropriate for the fish port, the location in the Kumbang Badak appropriate for the sea port and the location in the Kuala Tramang more appropriate for the trade port especially agricultural produce. Based on result of Analytical Hierarchy Process (AHP), the development of sea port in Kumbang Badak became the main priority to built immediately.