Cruciferous vegetables are one of the dominant food crops worldwide. Plutella xylostella, is one of the most important pests of the cruciferous crops. Larvae damage leaves, buds, flowers, and seed-buds of cultivated cruciferous plants. In the present study Phyllanthus emblica and Syzygium cumini, are checked for their antifeedant and larvicidal potential against the Plutella xylostella. Different parts of these plants like leaf, seed and bark extracts were used after soaking in methanol, ethanol and ethyl acetate separately. Varying concentrations of thefiltrateranging from 1-3% were tested and observed for 48hrs of exposure. Different concentrations of all the three extracts in control showed minimal antifeedant activity. 24.64% of leaf area was consumed in methanolic leaf extract of Phyllanthus emblica at 3% concentration and 48hrs of exposure, while Syzygium cumini, ethanolic leaf extract showed 39.26% of leaf consumed after 48hrs of exposure. The larvicidal activity was recorded by observing the mortality rate, of the insect after feeding on these leaves. Almost 90% mortality rate was recorded at 3% methanolic leaf concentration of Phyllanthus emblica after 48hrs of exposure, whereas Syzygium cumini, showed around 50% mortality at higher concentration and maximum exposure.No mortality rate was recorded in the control even after 48hr exposure. Phyllanthusembilicamethanolic leaf extractshowed maximum effect on the activity of thePlutella xylostella compared to Syzygium cumini.