The invention relates to convenient additive-free five-cereal nutritional noodles and a processing method thereof, and belongs to the field of food processing. The processing method comprises the following steps: performing quality optimization treatment on corns and black beans, grinding together with wheat, polished round-grained rice and yellow millets, blending, and performing curing forming to obtain the convenient five-cereal nutritional noodles. The obtained five-cereal nutritional noodles give full play to complementary nutrition advantages of rice, flour and beans, are endowed with relatively high nutritional value, are good in elasticity, toughness and reconstitution properties, do not need to be digested, can be eaten after being soaked with boiling water, and are convenient and quick; the process conditions are mild, no chemical and biosynthetic technologies are adopted, no pollution, waste residue, waste steam, waste water or harmful substance is generated, green production is realized, no gluten fortifier, thickening colloid, enzyme preparation or preservative is added, and no chemical reagent is used, so that the noodles are safe to eat.