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In this present investigation we report the green synthesis of siver nanoparticle (AgpNs) by using the leaf extract of three herb exRosemary officinalis , Punica granatum, Artemisia vulgaris Keywords:Nanoparticle , green herb, pathogenic bacteria , antibacteroial Introduction Nanotechnology provides aessential oil have been kown good plant form to modify and develop the important properties of metal in the form of nanoparticles having promsing application in diagnostic , biomarkers, cell labelling(1, 2 ), contrast agents for biological imaging, antimicrobial agent, drug delivery systems and nanodrug for treatment of various disease(1, 2 ). Preparation of Extracts All plant sample extracts were washed, dried under room temperature and converted to powder using mechanical grinder, 150 g of each plant powder wasindividually packed in thimple of soxhlet apparatus and extracted with 1000 ml of aqueous ethanol(thanol water80-20 v/v) for 12 each extract was filtered and concentrated under vacuum using arotary evaporator to get dry residue. [...]proposed the AgNps will have agreementt potential in anti MRbacteria (18 ). Both the component of metallic silver antibacterial and metabolic of plant has antibacterial well kow nanoparticle develop mechanisim nanoparticle adhere to the cell wall and increase the pore size of cell membrane which altimately facilities the plant metabolite to enter in the cell or interrupt the bacterial colonization.