Biodegradable polylactide (PLA) nanofibers containing silver nanoparticles were prepared by electro-spinning. Solutions of PLA in dichloromethane/N,N-dimethylacetamide (DMAc) with different amounts of silver nitrate ($AgNO_3$) were used to spin nanofibers. DMAc was used as a reducing agent for $Ag^+$ ions in the PLA solution. In the dilute solution system, the intrinsic viscosity and Huggins constant of the PLA/Ag solutions decreased at ($AgNO_3$) concentrations < 6 vt% whereas they increased at 9 wt% ($AgNO_3$). On the other hand, dichloromethane/ DMAc was found to be a good solvent with a similar solvatingpower to the Huggins constant results. The solution properties of the viscosity and electrical conductivity of the spinning solutions are strongly affected by the addition of ($AgNO_3$). The mean diameters of the PLA/Ag nanofibers containing 0, 3, 6 and 9 wt% of $(AgNO_3)$ were 400.9${pm}$0.1, 352.6${pm}$0.3, 482.8${pm}$0.2 nm respectively. The silver nanoparticles contributed to the formation of thinner PLA/Ag nanofibers. When the PLA nanofibers contained 6 wt% ($AgNO_3$), silver nanoparticles with an average size of 4.9 nm were distributed homogeneously in the PLA nanaofibers.