A process for producing noodle strips in which a dough sheet is slit into noodle strips using a rotary slitting device comprising at least a pair of cutting blade rolls, scraping members and air flow supply means. The dough sheet is passed through the cutting blade rolls, to thereby slit the dough sheet into noodle strips; the noodle strips are peeled off from the cutting blade rolls using the scraping members, to thereby separate into upper and lower noodle strip bundles; and air flow is supplied to the slit noodle strips from the air flow supply means. There is provided a process capable of stably realizing generally straight noodle strips with no strong longitudinal waves even in a mass production line.