Currently, Indonesia’s national program for controlling pests and pathogens focus on utilize local plant genetic resource for biopesticide. This study describes the potentiality of essential oils of Elettariopsis slahmong CK Lim as biopesticide. The effective biopesticide effects of the essential oil of E. slahmong against pests and pathogens on some Indonesia’s important agriculture crops have proven during the studies since 2012. Studies have been carried out at the laboratory of plant protection Biology Department Andalas University in Padang, the laboratory of biochemistry Chemistry Department Andalas University, the laboratory of plant protection at Research Station of Bogor Research Institute for Spice and Medicinal Plants in Solok, Tropical Fruit Research Institute in Solok, Faculty of Agriculture Kagoshima University Japan, cacao plantation (farmer property) in Pariaman, commercial cacao plantation in Agam, rubber plantation in Sijunjung and red dragon fruit and banana plantations in Padang ( all of these districts are in the Province of West Sumatra) and oil palm plantation in the Province of South Sumatra. The significant bio-insecticide and bio-fungicide effects have indicated against Helopeltis antonii, Setora nitens, Drosophilla melanogaster, Trigona minangkabau, Colletotrichum gloeospoiroides, Phytophthora palmivora and Rigidoporus macroporus, either in-vitro or in-planta. Essential oils of E. slahmong - distilled from either the leaves, the rhizomes or the pseudostems - displayed the highest biopesticide inhibitory activity compared with other essential oils produced by Cinnamomum burmanii and Syzygium aromaticum. Seven fractions of essential oils of E.slahmong were resulted by using GC-MS and study which of the chemical constituents of the oil has the main role and involve as biopesticide, is being investigated.