Nanotechnology deals with processes that take place on the nanometer scale, that is, from approximately 1 to 100 nm. Nanoparticles of silver have a many applications in different industries such as electronic and antimicrobial but the cost of preparation silver nanoparticles is very much, so one of the methods that use for decrease the costs of preparation silver nanoparticle is synthesis this valuable nanoparticle. in this study we tried to had a review about different methods that researchers presented for synthesis of silver nanoparticles by chemical process.