In this study a systematic comparative study of silver nanoparticles hydrosol prepared using different versions of the chemical reduction method have been made. Stability of the obtained sols, theire particle size and polydispersity have been compared. We synthesized nanoparticles via reduction of the AgN03 aqueous solution by sodium citrate and borohydride, glucose, ascorbic acid, cyclodextrins. Heating, treatment with microwave radiation and ultraviolet have been used to intensify the reduction. When necessary, surfactants were used for additional stabilization of silver nanoparticles. Observations of the surface plasmon resonance band in absorption spectra of the prepared sols allowed to choose the best way to obtain stable silver nanoparticles - the reduction of Ag (I) with an alkaline solution P-cyclodextrin under microwave irradiation. The optimum conditions for obtaining the silver hydrosol are pH=l 1, fifteen or more fold excess 0-cyclodextrin with respect to the precursor. The obtained hydrosol is stable for at least 4 months at a temperature of 5-25°C.