To provide a highly reliable device for manufacturing a tab terminal for an electrolytic capacitor, assuring removal of not only burrs but also angular portions from the peripheral edges of a flat portion and preventing damage to an aluminum foil to be wound on the flat portion.

Cutting portions 20, 21 and chamfering portions 22, 23 are formed on cutting edges 18, 19. The cutting portions 20, 21 are formed to slide along the outer peripheries of male and female molds 11, 12. The chamfering portions 22, 23 which have inclined faces to be apart from the outer peripheries of the male and female molds 11, 12 can contact an extrusion 15, when cut, prior to the cutting portions 20, 21. An inclined portion 24, inclined downward, is provided on the lower-side cutting edge 19.