To provide a method and an apparatus for producing nanofibers and polymeric web, with which nanofibers and a polymeric web utilizing them can be produced evenly with excellent productivity using a simple structure.

A polymer solution 2 that is prepared by dissolving a polymeric substance in a solvent is supplied into a cylindrical container 1 serving as a rotating container having a plurality of small holes 4. The cylindrical container 1 is driven to rotate by a rotationally driving means 15, and an electric field is applied by high voltage generating means 3 to polymeric filaments 5 discharged from the small holes 4 so that they become electrically charged. Then, primary and secondary electrostatic explosions 6, 7 or the like by the centrifugal force and the evaporation of the solvent take place to draw the polymeric filaments and producing nanofibers made of the polymeric substance. These nanofibers are deposited to produce a polymeric web.