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Gayo coffee has been the main commodity of the Gayo tribe, including the Mude Nosar, as local farmers. One of the waysto cultivate Gayo coffee is through an agroforestry system. However, limited reports on the tree species composition and its management in Gayo coffee-based agroforestry need to be explored. This study aims i) to identify the tree species composition and structure, as well as 2) to analyze the management of Gayo coffee-based agroforestry system in Mude Nosar Village. The method used plot establishment for vegetation analysis and interviewed the Gayo coffee farmers. The results showed that the number of tree species at all growth stages was 26 species. The highest Important Value Index (IVI) at the understory and sapling level in order was rumput kerbau (Paspalum conjugatum) and Gayo coffee (Coffea arabica), while at the seedling, pole, and tree levels were dominated by lamtoro (Leucaena leucocephala). The local farmers often use lamtoro as a shade tree for Gayo coffee in the agroforestry system. The species diversity index (H') showed low values at all tree growth levels. The horizontal structure of the tree stand showed an inverted J curve, meaning that the regeneration rate was normal. The vertical structure of the tree stand belongs to strata C and D. The local farmers have applied good Gayo coffee management practices through an agroforestry system, including land and seed preparation, planting, maintenance, and harvesting techniques. The management of Gayo coffee using an agroforestry system impacts the ecological, economic, and social aspects. [ABSTRACT FROM AUTHOR]