Poly(vinyl alcohol) (PVA) nanofibers were prepared by an electro spinning method using a PVA solution containing silver nitrate ($AgNO_3$) to improve the photovoltaic properties of dye-sensitized solar cells (DSSC). The electrospun PVA nanofibers containing $AgNO_3$ were irradiated with UV light at 310~380 nm and Ag nanoparticles were generated in their nanofibers. In the DSSC devices using the electro spun PVA/Ag nanofibers, the $J_{sc}$, $V_{oc}$, FF, and ${eta}$ showed the values of $11.9{sim}12.5;mA/cm^2$, 0.70~0.71 V, 0.55~0.59, and 4.73~4.99%, respectively. When the electrospun PVA/Ag (1 wt%) nanofibers were used in the DSSC device, the power conversion efficiency showed a maximum value of 4.99%, which is higher than that of DSSC using electro spun PVA nanofibers without Ag nanoparticles.