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The plant mediated synthesis of metal nanoparticles has been studing since last two decates. The plant mediated nanoparticles show great biological activites in comparison with chemicaling synthesised particles. So, in this work, the Rheum ribesextract mediated synthesis of Silver nanoparticle was investigated [1-2]. By sampling the Rheum ribesextract its properties in isolation in a variety of combinations of metals for nanotechnology, tested and evaluated.In this research, silver nanoparticle with green synthesis without the use of any harmful chemicalsToxicsolvent was synthesized.The beginning aqueous extract of Rheum ribes to boiling method developed by smoothing filter paper was then 1 mM solution of silver nitrate at a ratio of 9: 1 water: silver nitrate was added to it at room temperature.After a few minutes the color change of the solution began to change color, which is indicative of the silver recovery.Biosynthesis of silver nanoparticles using UV-VIS spectrophotometer that absorption peak at a wavelength of about 420 nm is indicative of this.At first the solution was centrifuged at 15000 rpm then precipitate product that includenano particles was isolated. The synthesised nanoparticles were isolated by ultracentrifuge. Their size were identified by UV-Vis, SEM and Xray analysis.