Recently, a new spinning method to replace electrospinning has been introduced by a small number of researchers. The centrifugal spinning method (centrifugal spinning, rotary jet spinning and force spinning) is a method of manufacturing nanofibers by rotating a disc. Centrifugal spinning is a system for making cotton candy with sugar and involves spinning a polymer melt or solution at a high centrifugal force to form nanofibers. Compared with electrospinning, it shows advantages of a higher production rate and insensitive dielectric constant of materials. The factors affecting nanofiber formation in centrifugal spinning are largely influenced by intrinsic properties (viscosity, concentration, and solvent type) and operating conditions (spinning speed and distance between the tip and collector). We used poly(vinyl alcohol) to investigate factors affecting nanofiber formation, and studied the morphology of nanofibers collected at the collector and the positions where the nanofibers were formed according to changes in various factors. The morphological changes were observed in detail by field-emission scanning electron microscopy.