Silver powder was prepared through chemical reduction method using silver sulfate in sulfuric acid. Various types of reducing agent were used. When ascorbic acid was used as reducing agent, monodispersed silver particles which had uniform polyhedron morphology and high crystallinity were obtained. Monodispersed silver particles were formed when the molar ratio of ascorbic acid and silver sulfate was 1. The volume average particle size of silver powder derived from ascorbic acid was 290 nm. The thickness of gum Arabic absorbed on silver particles was 11 nm. The crystallinity of silver powder became higher so that the reduction force of reducing agent was strong. Thermal mechanical measurement showed that the shrinkage of silver paste derived from silver sulfate was lower than that of silver paste derived from silver nitrate. Electrical measurements revealed that the speci c resistivity of the silver paste sintered at 900 for 60 min was 1.74 × 10 −8 Ω m.