In the recent past application of synthetic pesticides used to control mosquito-borne diseases like Zika, dengue, and filariasis. However, the vectors become resistant to chemical insecticide and few botanically-derived compounds. A plant producing compounds often show higher mortality against disease-carrying vectors. This study described that Caryota urens synthesizing silver nanoparticles shows the highest mortality against dengue causing vector Aedesa egypti vector. Synthesized nanoparticles were characterized by UV- Visible Spectroscopy, XRD and TEM. At a different concentration of nanoparticles from C. urens applied against various instars of A. aegypti. Ovi position deterrence of A. aegypti also described with a different concentration in that the highest concentration of C. urens shows increasing activity. Therefore, this study concluded that plant-producing nanoparticles are eco-friendly and safe for humans.