The main objective of this research is to describe the ecological conditions and floral composition of broad-leaved ravine forests in the Plitvice Lakes National Park. Research was done according to the standard Central European phytosociological method (Braun-Blanquet 1964). Broad-leaved ravine forests in Central Europe are defined by the alliance Tilio platyphylli-Acerion pseudoplatani Klika 1955. The alliance is characterized by the predominance of tree species Acer pseudoplatanus, A. platanoides, Fraxinus excelsior, Ulmus glabra, Tilia platyphyllos and Tilia cordata. Plitvice Lakes National Park is the oldest and largest national park in Croatia. Its total area is 29.630 ha and forests cover roughly 80 %. The broad-leaved ravine forests have not been studied thoroughly in the past because they occupy small area (in total cca. 10 ha) and the stands are fragmented. During 2020, 16 relevés were recorded within the boundaries of the Plitvice Lakes National Park. They were choosen because they met the conditions of the habitat type 9180* (Tilio-Acerion). 6 older relevés from the same area were also taken into account (Vukelić and Šapić 2011, 2013). A total of 22 phytosociological relevés were statistically analyzed and cluster analysis was made, which singled out two groups: type A and type B. Two found types of broad-leaved ravine forests differ in ecological and floral sense. The consequence of that is the isolation of 37 differential species based on frequency ≥ 45% and fidelity (ɸ) coefficient ≥ 50. The differences between the types were confirmed by the analysis of the biological spectrum and the sociological structure of the species. Differences in habitat conditions were evident in the analysis of ecological indicator values (EIV) of plant species according to Pignatti (2005). It showed that type B is characterized by statistically significantly warmer, neutrophilic and nutrient-poor habitat. The stands of broad-leaved ravine forests that are represented by the type A correspond to the description of the association Cardamino polyphyllae-Aceretum pseudoplatani (Ht. 1938) P. Košir et Marinček 1999. More extensive research is needed for nomenclatural-syntaxonomic determination of the investigated stands that are represented by the type B. This research also presents the mapping of broad-leaved ravine forests in the Park, which was carried out as part of the project „Detaljno kartiranje NATURA 2000 ciljnih šumskih stanišnih tipova (9180*, 91K0, 91L0, 91M0)” (Vukelić i dr. 2020).