A noodle string cutting device includes a pair of cutting blade rolls rotating in opposite directions in an engaged state to cut a dough sheet into noodle strings; separating teeth rows contacting outer peripheries of the cutting blade rolls at positions different from each other in rotational directions of the cutting blade rolls; and a chute member corresponding to falling positions of the noodle strings separated by the separating teeth row. The chute member is provided such that two or more sets are formed, each including the adjacent separating teeth rows and in each of which the chute is provided so as to correspond to the falling positions of the separated noodle strings. The noodle string cutting device can stack the noodle strings on a conveyor such that sticking of the noodle strings in steam-boiling can be reduced, and the noodle strings can be entirely and uniformly gelatinized.