A multistage steaming machine (200) is provided with a conveyor arranged at multiple stages such that a group of noodle strings carried in a steam chamber main body portion (2) goes and returns plural times along a first direction to be conveyed from an upper stage to a lower stage in the steam chamber main body portion (2). Further, in the multistage steaming machine (200), a steam pipe (5) applies steam to the group of noodle strings conveyed at an upper stage portion of the steam chamber main body portion (2), and the group of noodle strings is conveyed to the lower stage.
