The objective of the present invention is to provide a method of steaming more efficiently in a steaming process when steamed noodles or instant noodles are produced. A method of steaming a bunch of noodle strings using a noodle strings steaming device including a conveyer on which the bunch of noodle strings is placed after being cut out and that transports the bunch of noodle strings, and a tunnel type of body portion provided so that the bunch of noodle strings passes through the body portion with the transportation of the conveyer includes a process of carrying the cut-out bunch of noodle strings from an entrance portion of the body portion while transporting the cut-out bunch of noodle strings on the conveyer, steaming for a predetermined period of time by supplying steam to the bunch of noodle strings, steaming the bunch of noodle strings without supplying the steam, and then transporting the bunch of noodle strings to an exit portion, and a noodle strings steaming device performs the above method.