Ecotourism is a form of activity that integrates the principles of environmental conservation with educational recreational activities and provides economic benefits for the community. The management of mangrove ecotourism in Indonesia still requires the formulation of a comprehensive strategy that takes into account the integration of ecological, social, and economic aspects. This research aims to identify problems and formulate a strategy for managing mangrove ecotourism in the Mayangan Fisheries Port, Probolinggo City. The research method used is a qualitative and quantitative descriptive approach with primary data collection through field observation, questionnaire distribution, and stakeholder interviews, as well as secondary data obtained from literature studies. Data analysis was carried out using the SWOT (Strengths, Weaknesses, Opportunities, Threats) method through the stages of determining weights and ratings, calculating scores, and preparing a SWOT matrix to determine the strategy position. The results of the analysis showed a strength value of 2.74, weakness 0.37, opportunity 2.54, and threat 0.53, which placed the management of mangrove ecotourism in the Mayangan Fisheries Port environment of Probolinggo City in quadrant I with an aggressive strategy (growth-oriented strategy). These conditions show that the development of ecotourism has great internal strength and external opportunities, so the recommended strategies include the use of natural areas as a means of tourism education, biodiversity conservation, optimization of mangrove rehabilitation activities, and strengthening cooperation with the government and policy makers in promotional efforts. The sustainability aspect is the main focus in maintaining and improving the quality of mangrove ecotourism management in a sustainable manner.