Research on "Ethnobotany Plant Arecaceae Members in KecamataSeulimum" in October 2016. This study aims to determine the type of plants, the use of plants, parts of organs in plants and how plants use Arecaceae members. The approach used in this study is a qualitative approach. This type of research is descriptive using RRA (Rapid Appraisal Rurai) is an interview semistruktural. Data were analyzed descriptively in the form of tables and figures. Based on the results of data analysis showed that there are 10 species of plants member Arecaceae contained in each settlement, there are Cocos nucifera, Areca catechu, Elaeis gulneensis, Zalaca edulis, Calamus rotan, Arenga pinnata, Metroxylon sagu, Corypha utan, Borassus flabellifer and Chrysalidocarpus lutescens. The results showed that people Subdistrict Seulimum many take advantage of the internal organs coconut trees for building materials and crafts, parts of organs nut trees for building materials and food supplement, part organ sago palm / rumbia for food, rattan for handicrafts household, palm for food and drinks, and palm plants for ornamental plants. Part organ most widely utilized by people that is part of the stems, leaves and fruit. Subdistrict Community Seulimum use more organ part stems, leaves and fruit because the organ can be used as building materials, handicrafts and as food. The conclusions of this research is in the district community member Arecaceae Seulimum use the plant as food, drugs (drug fever), building materials and crafts