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In West Nusa Tenggara Province of Indonesia, implementation of leucaena as a ruminant feed is expanding because of its benefits. However, the composition of its metabolite compound is rare reported. The objective of this study was to identify the phytochemical secondary metabolite compound of leucaena (Leucaena leucocephala) leaf extracted with Methanol, Dichloromethane and n-Hexane solvent. The GCMS used as a method for identification of the secondary metabolite compound. The result indicated that the leucaena had saponin, flavonoid, alkaloid, steroid/triterpenoid and tannin/polyphenols. Stigmast-5-en-3-ol is dominant in Methanol solvent (37.12%), Octadec-9-enoic acid (21,12%) in Dichloromethane solvent and Cyclolanost-24-en-3-ol (9.19%) in n-Hexane solvent. There was a wide range of phytochemical secondary metabolites in leucaena, which may have both beneficial and detrimental actions in addition to the commonly studied mimosine.