This study aimed to determine the level of diversity and community perceptionof the existence of mangrove vegetation in Tiwatobi village, East Flores regency, EastNusa Tenggara province. This research is survey research. Based on the data collectiontechniques, this study employed observation techniques on 13 Mangrove plotsmeasuring 2m x 2m, 5m x 5m, and 10m x 10m to determine the diversity of mangrovevegetation. Furthermore, the interview technique and the distribution of thequestionnaire to 82 respondents based on the Slovin formula were carried out to specifycommunity perceptions of mangrove vegetation. The results revealed five types ofmangroves grouped into three families. The most elevated relative density at the treelevel was RhyzophotaMucronata (29.94), and the lowest was Bruguiera Parviflorawhich was 11.98. Based on the pile and stake levels, the highest relative density valueswere occupied by Bruguiera Parviflora (42.59), Munto (26.03). RhyzophoraStylosa(0.0) and Bruguiera parviflora (13.01) had the lowest relative density values. BruguieraParviflora is the species with the highest density of all levels, with a density value of42.59. Meanwhile, RhyzophoraStylose has the lowest relative density value of 0.0. Theoutcomes of this study also confirmed that the vegetation of the mangrove ecosystem inTiwatobi village, the index of importance, diversity, and richness of mangrovevegetation with the classification of 'medium' value caused by the environmentalcircumstances of mangroves that grow on muddy substrates and only a few species thatcan grow. In addition, community activities on the coast also vandalize the mangroveecosystem, especially for the mooring land construction to meet the family's economy.Furthermore, the community's perception of mangrove vegetation existence has acritical role in the viewpoints of physical, ecological, and economic, as evidenced by thepositive response to the existence, function, and preservation of mangrove forests inTiwatobi village.