The present invention relates to a device for manufacturing a cereal noodle, comprising: a device housing in which dough proceeds in an inner space； A hopper coupled to one side of the device housing for dispensing only water and grain powder into the device housing without the use of additives and preservatives； A driving motor provided outside the apparatus housing； A transfer screw unit connected to the drive motor and rotatably disposed in the apparatus housing for transferring the water and the grain powder injected into the apparatus housing through the hopper into the outlet of the apparatus housing； And a cereal noodle extruder connected to the outlet of the device housing for extruding and discharging the cereal noodle, wherein the kneading feed screw unit comprises: a motor link coupled to the drive motor； A shaft for dough disposed coaxially with the motor linkage and rotatably disposed in the apparatus housing； A first end flange formed at one end of the kneading shaft and connected to the motor connecting rod and having a larger diameter than the kneading shaft； A second end flange formed to be symmetrical with the first end flange at the other end of the dough shaft； A mixing kneader which forms an interval between the first and second end flanges and is kneaded while mixing the water and the grain powder； A kneading screw coupled to the kneading shaft in the mixing kneading section and having a first kneading screw and a second kneading screw coupled to the kneading shaft so as to intersect with the first kneading screw； And a second mixing dough material is formed by heating and cooling the first mixing dough material which is formed in the mixing dough portion in the interval between the first and second end flanges together with the mixing dough portion, A heating and cooling kneading section that forms an interval that is at least 1/5 times shorter than the section of the negative； An orientation screw coupled to the shaft for kneading in a region
