Lime (Citrus aurantifolia) peel has an important role in human health. Components contained in lime (Citrus aurantifolia) peel can be utilized in medical field. Lime peel is the site of accumulation of flavonoid and saponin compounds. Both compounds are useful for human health. The purpose of this study was to identify saponin and flavonoid compounds in lime (Citrus aurantifolia) peel. This study was a descriptive study. Foam test on lime (Citrus aurantifolia) peel extract revealed saponin compound, while extract test of lime (Citrus aurantifolia) peel using UV-Vis spectrophotometer revealed the presence of flavonoid compound with a level of 1.12%.