The device to narrow the nasal columella (1) and to dilate the nasal wings and the nasal valve, according to the invention, includes the first two horizontal branches (13a, 13b) joined, at the distal end (13) to form a U, from the internal wall of the proximal end (14a) and (15a), the first two—right (14) and left (15)—lamellae branch off, they join the internal wall of the distal ends (14b) and (15b) delimiting medially an elongated leaf-shaped space (14c, 15c). From the upper edge of the proximal portion of each horizontal branch (13a) and (13b), to the right (16b) and to the left (17b), a respective second branch gets off the latter acute angled bends (16), after a short vertical portion, and (17) towards the outside and it continues with a respective second dragonfly-wing shaped lamella, to the right (18) and to the left (19), suitable for being inserted into the nasal vestibule and the nasal valve.