This study aims to describe the structure and composition of durian agroforestry stands in Alasmalang and to determine the diversity of Alasmalang durian agroforestry tree species. This research was carried out from September 2021 to December 2021, located in the durian farmer's garden Alasmalang, Kemranjen sub-district, Banyumas district by making a circle sample plot with an area of 0.01 Ha and made as many as 18 points, each point having a diameter of 11 m. The results of this study indicate that (1) The structure and composition of the 18 sample plots taken, obtained 15 tree species with a total of 156 individuals. There are 3 types of trees that dominate based on the INP value of each individual, namely Durian (Durio zibethinus) 130 0.01%, Clove (Syzigium aromaticum) 32.91%, Coconut (Cocos nucifera L.) 24.30 %, (2) The diversity of tree species in the Alasmalang durian agroforest is in the moderate category. The agroforestry pattern is classified as a silvicultural pattern, which is a mixture of forestry elements (woody plants) and agricultural elements (non-timber crops).