The invention provides multifunctional fermented corn flour and a production process thereof, relates to the field of processing of corn flour and solves the problems that corn flour prepared by adopting an existing rough processing method is low in viscoelasticity, the mouth feel of a finished product prepared from the corn flour by adopting an existing rough processing method is rough, the palatability is poor, the taste is spicy and the corn flour is not easy to digest. The multifunctional fermented corn flour comprises following components in percentage by weight: 99.92%-99.95% of corn dreg, 0.03%-0.05% of amylase, 0.02%-0.03% of yeast and the balance being water. The surface of the corn flour can pass through a 90-mesh sieve and the flour can pass through a 150-200-meshseive after water is added for kneading; the surface color of the flour keeps faint yellow of corns; the strengthen physicochemical indexes can reach the standard of wheat flour, and preservatives and chemical adhesive substances are not contained; after the flour is mixed, dough has the certain ductility and viscoelasticity; nutritional components are not changed and the mouth feel is fine, smooth, tough, chewy and smooth; after the multifunctional fermented corn flour is eaten, gastric acid is not generated, and bitter and astringent and spicy tastes are not generated; the flavor of the corns is kept and soup is not muddy after a product is boiled.