The emergence of the tourism era 4.0 is the impact of the 4.0 industrial revolution in the tourism sector. This era was marked by the ease of access to information through digital media. Marine Ecotourism is a tourism activity that reflects cultural heritage, participation, and welfare of local residents also efforts to conserve natural and environmental resources, especially in coastal and island areas. This study aims to determine the suitability of the Lengkuas Island tourist area and the strategy of management and development of Lengkuas Island object. This research was conducted in February - April 2019 on Lengkuas Island, Sijuk District, Belitung Regency, Bangka Belitung Province. Travel suitability measurements based on parameters in the specified matrix will then be adjusted to the Tourism Suitability Index. Variables that will be used consist of, water depth, beach type, beach brightness, beach width, beach slope, current velocity, land cover, dangerous biota, water base material, clean water availability. The results show that Stations 1 (97.6%), II (94%), and III (94%) are very suitable for the category of recreation and swimming. Stations IV (19), V (19), And VI (19) are very suitable for tourist activities especially boating, banana boating, canoeing, and jet skiing.